Solve the following system of equations using the substitution method

MATHEMATICS · Subjective · CBSE · Mathematics · Pair of Linear Equations in Two Variables · Pair of Linear Equations in Two Variables

Problem

Solve the following system of equations using the substitution method. Verify by substituting your values into both equations above.

\begin{aligned}x + 8y &= -15 \\ 7x + 8y &= -9\end{aligned}