Answer:
x-x-y
Step-by-step explanation:
Answer: 40
maybe
x=2.4
5·x=5x
5x=12
12/5=2.4
x + 2y = 8
x - y = 2
-x + y = -2
3y = 6
y = 2
x - 2 = 2
x = 4
(4, 2)