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Solve the System of Equations by the Substitution Method {−6y+7y=−1x+2(x−3)+1x+35(x+y)−x+y=−2\left\{ \begin{array} { l } - 6 y + 7 y = - 1 x + 2 ( x - 3 ) + 1 x + 3 \\5 ( x + y ) - x + y = - 2\end{array} \right.

Question 83

Multiple Choice

Solve the system of equations by the substitution method.
- {−6y+7y=−1x+2(x−3) +1x+35(x+y) −x+y=−2\left\{ \begin{array} { l } - 6 y + 7 y = - 1 x + 2 ( x - 3 ) + 1 x + 3 \\5 ( x + y ) - x + y = - 2\end{array} \right.


A) (-1, 1)
B) (1, -1)
C) infinite number of solutions
D) no solution

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