Answer:
(0.5)
Step-by-step explanation:
x + y = 5
3x - y = -5
Put "y" on one side to isolate
3x - y = -5
3x = y - 5
3x + 5 = y
Plug "3x + 5" in for "y" in the second equation
x + (3x + 5) = 5
4x + 5 = 5
4x = 0
x = 0
Plug "0" in for "x" in any one of the equations
0 + y = 5
y = 5
To check, plug in "0" for "x" into the first equation and make sure they get the same answers
3(0) - y = -5
0 - y = -5
y = 5
