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what is x?

good reply!

put your second equation in first one
3x- ( 2x+99) = -137
find x now.

i can try

what r they?

sorry, i meant *eliminating* and graphing!

:)

ok i will try... gtg sorry :((

kay, bye. thanks tho

Wait, 2x + 8y = -20, i can't solve it no more, can i ? idk, i'm confused! how do you get (3) - (1) ?

(3) - (1) as in equation (3) - equation(1) to eliminate the 2x which is common in both equations

2x + y = -1......(1)
2x + 8y = -20...(3)
(3) - (1)
2x - 2x +8y - y = -20 - (-1)
7y = -19

Ohh! okay okay, i understand.. so y = -2.714 ?