# How do you solve the system of equations 5x + y = 9 and - 10x + 7y = 18?

Jun 8, 2018

$x = 1 , y = 4$
Multiplying the first equation by $2$ and adding to the second:
$9 y = 36$ so $y = 4$
$5 x + 4 = 9$ so $x = 1$