Question

WILL GIVE MEDAL


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

x – y = 7
x = y + 3

A.
x – y = y + 3

B.
x – (y + 3) = 7

C.
x = (7 – x) + 3

D.
(y + 3) – y = 7

Answer 1

which one do you think it is?

Answer 2

C

Answer 3

i dont think so because -y=7-x therefore positive y=-7+x or x-7

Answer 4

Which one do you think it is?

Answer 5

D

Answer 6

thanks for the medal :)