Find the solution of the system of equations.
$\begin{array}{l} - 9 x + 8 y = - 26 \\ - 9 x - 6 y = - 12 \end{array}$

Answer

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Answer

Solution: (2, 4)

Steps

Step 1 ： $1^{s t}$ equation $- 9 x + 8 y = - 26$

Step 2 ： $2^{n d}$ equation $- 9 x - 6 y = - 12$

Step 3 ：Add $1^{s t}$ and $2^{n d}$ equation: $(- 9 x + 8 y) + (- 9 x - 6 y) = - 26 + (- 12)$

Step 4 ：Solve for $y$ : $y = 4$

Step 5 ：Substitute $y$ into the $1^{s t}$ equation: $- 9 x + 8 (4) = - 26$

Step 6 ：Solve for $x$ : $x = 2$

Step 7 ：Solution: (2, 4)