### Home > PC > Chapter 2 > Lesson 2.2.1 > Problem2-39

2-39.

Solve:     $\left\{ \begin{array} { l } { 4 x + 2 y = 7 } \\ { 3 x - y = 5 } \end{array} \right.$

1. Double the second equation and add it to the first.

$\begin{array} {r} 4x + 2y = 76 \\ x - 2y = 10 \\ 10x = 17 \end{array}$

2. Solve for $x$.

3. Then substitute that answer back into one of the original equations.

4. Check your answer by substituting both answers for $x$ and $y$ into the other original equation.