Question

I still don't understand :(
Solve this system of equations.
12x+8y=-52
6x+3y=-21

Answer 1

Multiply both sides of the second equation by 2:
12x+8y=-52
12x+6y=-42
Now you can subtract the second equation from the first (this eliminates x).
2y=-10
Now solve for y:
y=-5
To solve for x, input y=-5 into either of the original equations and solve:
6x+3(-5)=-21
This gives,
6x-15=-21
and,
6x=-6
Thus,
x=-1
So you solutions are x=-1 and y=-5