Question

Solve the following system of equations by substitution.
2x = 4
2x – y = 5


A. (1/2, 4)
B. (2, 9)
C. (7, 7)
D. (2, -1)

Answer 1

Use your first equation to find x.

You have 2x = 4. Divide both sides by two and get what x equals. Then, take your second equation and plug x, while solving for y.

Rearranging your second equatino to y = 2x -5 should help you out a bit.

Answer 2

idk know how to do any of that stuff

Answer 3

@ganeshie8

Answer 4

it was B