SOLUTION: solve by elimination 4x-y=36, 9y=4x-68

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Question 891411: solve by elimination 4x-y=36, 9y=4x-68
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Put both into standard form.
4x-y=36, 9y=4x-68

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4x-y=36
-4x-9y=-68
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Add corresponding members to eliminate x.
8y=36%2B%28-68%29
8y=-32
highlight%28y=-4%29

Multiply the first equation by 9 and multiply the second equation by -1.
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36x-9y=36*9
4x+9y=68
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Add corresponding members to eliminate y.
40x=36%2A9%2B68=360-36%2B68
40x=360%2B32
40x=392
highlight%28x=9.8%29