Question

- 7x-2y=-13
x - 2y = 1
Solve by substitution

Answer 1

multiply and subtract and do the x y across

Answer 2

y = 3/8, x = 7/4

Explanation:

x = 2y+1

-7(2y+1) - 2y = -13

-14y - 7 - 2y = -13

-16y - 7 = -13

-16y = -6

y = 3/8

Plug the value for y into one of the equations to solve for x