Question

Use addition or substitution to find the value of y for this set of equations.
x - y = 120
x + y = 150

Answer 1

subtract first equation from second equation and see what u get

Answer 2

is it y = -30

Answer 3

looks incorrect, how did u get that could u show..

Answer 4

no u tell me the answer its a quetion to u

Answer 5

aha wat would i get doing that

Answer 6

gold metal if u tell me
also show me how to give u a meltal

Answer 7

lol ok, y = 15. you seem to be new to this site, here its a crime to give answers directly without making sure you understand the solution ! good luck with ur other qs.

Answer 8

thanks lol