Answer:
x = 3; y = 2
Explanation:
x + y = 5
y = 2x - 4
Isolate the y in the first equation
y = 5 - x
y = 2x - 4
Substitute the values
5 - x = 2x - 4
Isolate the Variable
9 = 3x
Simplify
3 = x
Plug that into the first equation
3 + y = 5
Subtract 3 from both sides
y = 2