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OpenStudy (anonymous):
6x-3y=21 2x+2y=22 elimination by multiplacation.
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OpenStudy (mertsj):
Multiply the bottom equation by -3 and add the result to the top equation.
OpenStudy (anonymous):
-6X+6y=-66
OpenStudy (anonymous):
Well what do you mean by eliminate by multiplication? What I did was I set it up so that you have: 6x-3y=21 -3(2x+2y=22) this will give you 6x-3y=21 and -6x-6y=-66 This system enables you to solve for y. -3y-6y=21-61 -9y=-45 y=5 Now, you can just plug y back in to any of the 2 equations given. x=6
OpenStudy (anonymous):
thank you!
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