Question

Solve using systems of equations. -3x-4y=-8 3x+3y=9

Answer 1

Sure thing!

$-3x-4y=-8\\ 3x+3y=9\\ ----------\\ 0x-1y=1\\ y=-1$

since y = -1 we can just plug it into the first equation
$-3x-4(-1)=-8\\ -3x+4=-8\\ -3x=-12\\ x=4$