Need help!!solve the system of equations by elimination.3x - y = 104x + 2y = 40

1 answer:

3 0

Multiply the top equation by 2 and combine both equations to leave x alone. It is better if you do this vertically but it is hard here.

(6x-2y=20)+(4x+2y=40)

10x=60

x=6

Plug x back in to one of the equations.

3(6)-y=10

18-y=10

-y=-8

y=8

Your solution is (6,8)

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