Question

solve using the substitution method
show all work
-7x+ y=29
2x+12y=90

Answer 1

seems like you have typos

Answer 2

why two ys and why 2 equal signs?

Answer 3

thats supposed to be + 12y

Answer 4

you can use the edit key to fix the typos

Answer 5

and the 2 ys

Answer 6

it says that y = 29

Answer 7

-7x+y what is that?

Answer 8

Rearrange the first equation to get
y = 29 + 7x
now, you have a y to substitute for the bottom function. You should have a function consisting of only x's!
2x + 12(29+7x) = 90
combine like terms and solve for x. Once you have your x, plug it into the first equation and solve for y.

Answer 9

is this your problem?