Question

Solving systems x=-2y+1. 4=x+y

Answer 1

(x, y) = (7, -3)

Step-by-step explanation:

Given the syatem of equations:

x=-2y+1 ... 1

4=x+y ... 2

Substitute equation 1 into 2:

4 = -2y+1+y

4 = -2y+y+1

4 = -y+1

-y = 4-1

-y = 3

y = -3

Substitute y = -3 into equation 1:

x = -2y+1

x = -2(-3)+1

x = 6+1

x = 7

Hence the solution to the system of equations is (7, -3)