Question

-6x+3y=-39 -6x-3y=-21 solve the system of equations

Answer 1

The answer is the one on top

Answer 2

x=5,y=-3

Explanation:

`\left \{ {{-6x+3y=-39} \atop {-6x-3y=-21}} \right. \\-12x=-60\\12x=60\\x=(60)/(12) \\x=5`

`-6(5)+3y=-39\\-30+3y=-39\\3y=-39+30\\3y=-9\\y=-(9)/(3) \\y=-3`