Question

4x + 2y = 12
x – y = 3
???? HELP/:

Answer 1

multiply the bottom equation by 2 in order to cancel out the y.

(x-y=3)2
2x-2y=6

Now add the two equations

4x+2y=12
2x-2y=6

6x=18 (Now solve for X)
x=3

Now plug the X back into the either equation.

4(3)+2y=12
12+2y=12
2y=0
y=0

Y=0 X=3