Question

I NEED SOMEONE TO DOUBLE CHECK THIS QUESTION! *WILL MEDAL*

Which equation shows the substitution method being used to solve the system of linear equations?



x – y = 7

x = y + 3



A.


(y + 3) – y = 7


B.


x – (y + 3) = 7


C.


x = (7 – x) + 3


D.


x – y = y + 3


I THINK A

Answer 1

A is right

Answer 2

Okay, thanks. :)

Answer 3

=)