Question

solve the following equation 2x + 3y =40 and -2x + 2y=20

Answer 1

Y=12
X=2

I solved by the elimination method....add both equations together...
2x + 3y = 40
+ -2x + 2y = 20

5y = 60
y = 12

Substitute 12 for y then solve for x

2x + 3(12) = 40
2x + 36 = 40
2x = 4
X = 2