Question

У = -x + 2
y = 2x + 5

Answer 1

x= -1

Explanation:

-x+2= y =2x+5

-x+2=2x+5 /+x

2=3x+5 /-5

-3=3x

x= -1

Answer 2

Use substitution
-x + 2 = 2x + 5
2 = 3x + 5
-3 = 3x, x = -1
Plug into any equation to find y
y = -(-1) + 2
y = 1 + 2 = 3

Solution: x = -1, y = 3