Solve for x and y

x+y=1

2y-x=8

( - 2, 3)

Step-by-step explanation:

Given the 2 equations

x + y = 1 → (1)

2y - x = 8 → (2)

Adding the 2 equations term by term will eliminate the x - term

(x - x) + (y + 2y) = (1 + 8), that is

3y = 9 (divide both sides by 3)

y = 3

Substitute y = 3 into either of the 2 equations and solve for y

Substituting y = 3 in (1)

x + 3 = 1 (subtract 3 from both sides)

x = - 2

Solution is ( - 2, 3)