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Anestetic [448]
3 years ago
10

Solve the system of equations x - 2y = – 7 and -3x – 2y = 29 by combining the equations.

Mathematics
1 answer:
Ksivusya [100]3 years ago
5 0

Answer:

x = - 9, y = -1

Step-by-step explanation:

<em>Given:</em>

<em />\begin{bmatrix}x-2y=-7\\ -3x-2y=29\end{bmatrix}

Solve:

\mathrm{Substitute\:}x=-7+2y

\begin{bmatrix}-3\left(-7+2y\right)-2y=29\end{bmatrix}

\begin{bmatrix}21-8y=29\end{bmatrix}

\mathrm{For\:}x=-7+2y

\mathrm{Substitute\:}y=-1

x=-7+2\left(-1\right)

x=-9

\mathrm{Thus, Answer:x=-9,\:y=-1}

[RevyBreeze]

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