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Find the solution of the system of equations. \[ \begin{array}{r}-x-7 y=-41 \\ \qquad x-6 y=-37\end{array} \] Answer Attempt 1 out of 2

Ask by Maxwell Davison. in the United States
Mar 10,2025

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Answer

The solution to the system is \( x = -1 \) and \( y = 6 \).

Solution

We start with the system of equations: \[ \begin{aligned} - x - 7y &= -41, \\ \quad x - 6y &= -37. \end{aligned} \] **Step 1.** Add the two equations to eliminate \( x \): \[ (- x - 7y) + (x - 6y) = -41 + (-37). \] Notice that \( -x + x = 0 \) and \( -7y - 6y = -13y \). Thus, the equation simplifies to: \[ -13y = -78. \] **Step 2.** Solve for \( y \): \[ y = \frac{-78}{-13} = 6. \] **Step 3.** Substitute \( y = 6 \) into one of the original equations. We choose the second equation: \[ x - 6y = -37. \] Replace \( y \) by 6: \[ x - 6(6) = -37 \quad \Rightarrow \quad x - 36 = -37. \] **Step 4.** Solve for \( x \): \[ x = -37 + 36 = -1. \] **Solution:** The solution to the system is: \[ (x, y) = (-1, 6). \]

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Let's solve the system step-by-step! First, we start with the two equations: 1. \( -x - 7y = -41 \) 2. \( x - 6y = -37 \) From equation 1, we can solve for \( x \): \[ -x = -41 + 7y \] \[ x = 41 - 7y \] Now we can substitute this expression for \( x \) into equation 2: \[ (41 - 7y) - 6y = -37 \] Combine like terms: \[ 41 - 13y = -37 \] Now, isolate \( y \): \[ -13y = -37 - 41 \] \[ -13y = -78 \] \[ y = 6 \] Now, substitute \( y \) back into either equation to find \( x \). Let's use equation 2: \[ x - 6(6) = -37 \] \[ x - 36 = -37 \] \[ x = -1 \] So, the solution to the system is \( x = -1 \) and \( y = 6 \). Therefore, the solution is \( (-1, 6) \).

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