Question

Use the substitution method to solve the system of equations.

2x – 5y = –14
x – 2y = –5

Answer 1

x = 3, y = 4

Answer 2

let x=2y-5
substitute into 2x-5y=-14 then,
2(2y-5)-5y=-14
4y-10-5y=-14
-10-y=-14
y=4

substitute into x-2y=-5 then
x-2(4)=-5
x=3