Question

Solve each linear equation by subsitution or elimination
4x-y=-1
2x+y=7

Answer 1

4x - y = -1
2x + y = 7
6x = 6
6 6
x = 1
4x - y = -1
4(1) - y = -1
4 - y = -1
- 4 - 4
-y = -5
-1 -1
y = 5
(x, y) = (1, 5)