Question

2x - y = -10
0.5x + y = 5

Answer 1

2x-y=-10
1/2x+y=5
1/2x+2y/2=10/2
X+2y=10

2x-y=-10
-2(X+2y=10)
——————-
2x-y=-10
-2x-4y=-20
——————-
0x-5y=-30

-5y=-30
Y=-30/-5
Y=6

X=10-2y
X=10-2•6
X=10-12
X=-2

X=-2
Y=6