Example Question - equation

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Finding Equations and Simplifications

<p>a. To find the equation of a line that passes through points A(3, 4) and B(0, -2), use the slope formula:</p> <p>m = (y2 - y1) / (x2 - x1) = (-2 - 4) / (0 - 3) = -6 / -3 = 2.</p> <p>Using point-slope form: y - y1 = m(x - x1), we get:</p> <p>y - 4 = 2(x - 3).</p> <p>Rearranging gives: y = 2x - 6 + 4 = 2x - 2.</p> <p>b. The sum of 7244 + 809871 + 19 is: 7244 + 809871 + 19 = 817134.</p> <p>c. For simplification of 16^x * 2^4 * y^2z:</p> <p>16 = 2^4, so 16^x = (2^4)^x = 2^(4x).</p> <p>Thus, 16^x * 2^4 * y^2z = 2^(4x + 4) * y^2 * z.</p> <p>d. The truth set of 8 - m = 6 is:</p> <p>8 - m = 6 ⇒ m = 2.</p> <p>On the number line, the truth set is {2}.</p>

Finding the Value of a Variable

<p>To solve for \( q \), start with the equation:</p> <p> \( 16 \times 5 \times \frac{q}{10} = \text{{value}} \)</p> <p>First, simplify the left side:</p> <p> \( 16 \times 5 = 80 \), hence:</p> <p> \( 80 \times \frac{q}{10} = \text{{value}} \)</p> <p>Next, multiply \( 80 \) by \( \frac{1}{10} \):</p> <p> \( 8q = \text{{value}} \)</p> <p>Finally, solve for \( q \):</p> <p> \( q = \frac{\text{{value}}}{8} \)</p>

Finding the Value of a Variable

<p>To solve for \( q \), start with the equation:</p> <p>\( \frac{3}{8} \times 4 \times q = \text{blank} \)</p> <p>First, calculate \( \frac{3}{8} \times 4 \):</p> <p>\( \frac{3 \times 4}{8} = \frac{12}{8} = \frac{3}{2} \)</p> <p>Now substitute this into the equation:</p> <p>\( \frac{3}{2} \times q = \text{blank} \)</p> <p>Solving for \( q \):</p> <p>\( q = \frac{\text{blank}}{\frac{3}{2}} = \text{blank} \times \frac{2}{3} \)</p>

Finding the Value of a Variable in an Equation

<p>Given the equation \( x^{2m} = \frac{(x^3)^8}{x^6} \).</p> <p>First, simplify the right side:</p> <p>\( \frac{(x^3)^8}{x^6} = \frac{x^{24}}{x^6} = x^{24-6} = x^{18} \).</p> <p>Now, equate the exponents:</p> <p>So, \( 2m = 18 \).</p> <p>To find \( m \), divide both sides by 2:</p> <p>Therefore, \( m = \frac{18}{2} = 9 \).</p>

Finding the Value of an Exponent

<p>Given the equation:</p> <p>$$9^{2m - 5} \times 9^3 = 9^{m + 1}$$</p> <p>Combine the left-hand side using the property of exponents:</p> <p>$$9^{(2m - 5) + 3} = 9^{m + 1}$$</p> <p>This simplifies to:</p> <p>$$9^{2m - 2} = 9^{m + 1}$$</p> <p>Since the bases are the same, set the exponents equal:</p> <p>$$2m - 2 = m + 1$$</p> <p>Isolate \( m \):</p> <p>$$2m - m = 1 + 2$$</p> <p>$$m = 3$$</p>

Solving an Equation

<p>Starting with the equation:</p> <p>r - 76 = 54</p> <p>Add 76 to both sides:</p> <p>r = 54 + 76</p> <p>r = 130</p> <p>The solution is r = 130.</p>

Matrix Equation Solution

<p>Let A = \begin{pmatrix} 0 & 1 \\ y & 5 \end{pmatrix}, B = \begin{pmatrix} 4 & -1 \\ 6 & x \end{pmatrix}, C = \begin{pmatrix} 4 & 0 \\ x & 7 \end{pmatrix}.</p> <p>Then, we have:</p> <p>A + B = C.</p> <p>Thus, we can write:</p> <p>\begin{pmatrix} 0 + 4 & 1 - 1 \\ y + 6 & 5 + x \end{pmatrix} = \begin{pmatrix} 4 & 0 \\ x & 7 \end{pmatrix}.</p> <p>From this, we can derive the equations:</p> <p>0 + 4 = 4,</p> <p>1 - 1 = 0,</p> <p>y + 6 = x,</p> <p>5 + x = 7.</p> <p>Solve the last equation for x:</p> <p>x = 7 - 5 = 2.</p> <p>Then substitute x back into the third equation:</p> <p>y + 6 = 2.</p> <p>y = 2 - 6 = -4.</p> <p>The values of y and x are:</p> <p>x = 2,</p> <p>y = -4.</p>

Determine the value of a variable

<p> Multiplique ambos lados de la ecuación por 6 para eliminar los denominadores: </p> <p> 6 \left( \frac{x - 1}{2} + \frac{x - 2}{3} \right) = x </p> <p> 3(x - 1) + 2(x - 2) = x </p> <p> 3x - 3 + 2x - 4 = x </p> <p> 5x - 7 = x </p> <p> 5x - x = 7 </p> <p> 4x = 7 </p> <p> x = \frac{7}{4} </p>

Finding the Value of a Variable

<p>Empezamos con la ecuación: </p> <p>\(\frac{x}{5} + \frac{x}{3} + \frac{x}{15} = 9\)</p> <p>El común denominador de los denominadores 5, 3 y 15 es 15. Multiplicamos toda la ecuación por 15:</p> <p> \(15 \left(\frac{x}{5}\right) + 15 \left(\frac{x}{3}\right) + 15 \left(\frac{x}{15}\right) = 15 \cdot 9\)</p> <p>Esto nos da:</p> <p> \(3x + 5x + x = 135\)</p> <p>Sumamos los términos similares:</p> <p> \(9x = 135\)</p> <p>Ahora dividimos ambos lados por 9:</p> <p> \(x = \frac{135}{9}\)</p> <p>Por lo tanto, \(x = 15\).</p>

Solving an Equation with Division and Parentheses

<p>First, simplify the expression inside the parentheses:</p> <p>2 + 2 = 4</p> <p>Now the equation looks like this:</p> <p>8 ÷ 2 × 4</p> <p>Next, perform the division and multiplication from left to right:</p> <p>8 ÷ 2 = 4</p> <p>Then multiply:</p> <p>4 × 4 = 16</p> <p>Thus, the final answer is:</p> <p>16</p>

Algebraic Equation Simplification

<p>\[ 5x - (-8) + (-9) = 9x - (-7 + 1) \]</p> <p>\[ 5x + 8 - 9 = 9x - (7 - 1) \]</p> <p>\[ 5x - 1 = 9x - 6 \]</p> <p>\[ 5x - 9x = -6 + 1 \]</p> <p>\[ -4x = -5 \]</p> <p>\[ x = \frac{-5}{-4} \]</p> <p>\[ x = \frac{5}{4} \]</p>

Basic Algebraic Equation Problem

Seja \( x \) o número desconhecido. A equação baseada no problema é: \[ \frac{x - 4}{3} = 2 \] Multiplicar ambos os lados da equação por 3 para isolar o termo \( x - 4 \): \[ x - 4 = 3 \cdot 2 \] <p>\( x - 4 = 6 \)</p> Adicionar 4 a ambos os lados para resolver \( x \): \[ x = 6 + 4 \] <p>\( x = 10 \)</p> Portanto, o número é 10.

Solving a Simple Algebraic Equation

<p>Seja \( x \) o número desconhecido. Temos a seguinte equação baseada na descrição:</p> <p>\( (x - 4) / 3 = 2 \)</p> <p>Multiplicamos ambos os lados da equação por 3 para isolar \( x - 4 \):</p> <p>\( x - 4 = 3 \times 2 \)</p> <p>\( x - 4 = 6 \)</p> <p>Adicionamos 4 a ambos os lados da equação para encontrar \( x \):</p> <p>\( x = 6 + 4 \)</p> <p>\( x = 10 \)</p> <p>Portanto, o número é 10.</p>

Find the Original Number in a Simple Algebraic Equation

<p>Seja \( x \) o número desconhecido.</p> <p>A primeira operação é multiplicar \( x \) por 2: \( 2x \).</p> <p>Em seguida, adiciona-se 3 ao produto: \( 2x + 3 \).</p> <p>A soma final é dada como 7: \( 2x + 3 = 7 \).</p> <p>Agora, resolve-se a equação para \( x \):</p> <p>Subtrai-se 3 de ambos os lados da equação: \( 2x = 7 - 3 \).</p> <p>\( 2x = 4 \).</p> <p>Divide-se ambos os lados por 2 para encontrar \( x \): \( x = \frac{4}{2} \).</p> <p>\( x = 2 \).</p> <p>O número desconhecido é 2.</p>

Complex Number Equation Simplification

Rješavamo zadanu jednadžbu korak po korak. <p>\(3 + z - 4(1+i) \cdot \overline{z} = (z - 1)i\)</p> Prvo ćemo distribuirati \( -4 \) kroz zagrade. <p>\(3 + z - 4(1+i) \cdot (x - yi) = (x + yi - 1)i\), gdje je \(z = x + yi\)</p> Sada množimo kompletne brojeve s konjugiranim kompleksnim brojem. <p>\(3 + x + yi - 4 \cdot (x - yi) - 4 \cdot (x - yi)i = xi - yi^2 - i\)</p> Imajući na umu da je \(i^2 = -1\), možemo uvijek zamijeniti \(yi^2\) sa \(-y\). <p>\(3 + x + yi - 4x + 4yi - 4xi + 4y = xi + y - i\)</p> Sada grupiramo realne i imaginarene dijelove s obije strane jednadžbe. <p>\((3 - 4x + 4y + x) + (y + 4yi - 4xi - i)i = (xi + y) - i\)</p> Jednakost realnih i imaginarnih dijelova mora biti zadovoljena na obije strane jednadžbe. <p>Za realni dio:</p> <p>\(3 - 3x + 4y = 0\)</p> <p>\(4y = 3x - 3\)</p> <p>\(y = \frac{3x - 3}{4}\)</p> <p>Za imaginarni dio:</p> <p>\(y - 4xi = -1\)</p> <p>\(-4xi = -y - 1\)</p> <p>\(xi = \frac{y + 1}{4}\)</p> Sada kada imamo dva izraza za \(y\) i \(xi\), možemo ih koristiti kako bismo našli rješenje za \(x\) i \(y\). <p>\(x = \frac{y + 1}{4i}\)</p> <p>\(x = \frac{\frac{3x - 3}{4} + 1}{4i}\)</p> <p>\(x = \frac{3x - 3 + 4}{16i}\)</p> <p>\(16xi = 3x + 1\)</p> <p>\(x(16i - 3) = 1\)</p> <p>\(x = \frac{1}{16i - 3}\)</p> <p>\(x = \frac{1}{16i - 3} \cdot \frac{16i + 3}{16i + 3}\)</p> <p>\(x = \frac{16i + 3}{256 - 9}\)</p> <p>\(x = \frac{16i + 3}{247}\)</p> Sada kada smo našli \(x\), možemo riješiti za \(y\) koristeći izraz koji smo već izveli. <p>\(y = \frac{3x - 3}{4}\)</p> <p>\(y = \frac{3 \cdot \frac{16i + 3}{247} - 3}{4}\)</p> <p>\(y = \frac{48i + 9 - 741}{988}\)</p> <p>\(y = \frac{48i - 732}{988}\)</p> <p>\(y = \frac{48i}{988} - \frac{732}{988}\)</p> <p>\(y = \frac{6i}{123} - \frac{183}{247}\)</p> Tako imamo rješenje za \(z\): <p>\(z = x + yi\)</p> <p>\(z = \frac{16i + 3}{247} + \left(\frac{6i}{123} - \frac{183}{247}\right)i\)</p> <p>\(z = \frac{16i + 3}{247} + \frac{6i^2}{123} - \frac{183i}{247}\)</p> <p>\(z = \frac{16i + 3}{247} - \frac{6}{123} - \frac{183i}{247}\)</p> <p>\(z = \frac{3 - 6 \cdot 2}{247} + \frac{16i - 183i}{247}\)</p> <p>\(z = \frac{3 - 12}{247} + \frac{16i - 183i}{247}\)</p> <p>\(z = \frac{-9}{247} + \frac{-167i}{247}\)</p> <p>\(z = -\frac{9}{247} - \frac{167i}{247}\)</p> Dakle, rješenje za zadanu jednadžbu je: <p>\(z = -\frac{9}{247} - \frac{167i}{247}\)</p>

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