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OpenStudy (anonymous):
SOLVE. 4x-5y=-28 2x-y=-5
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OpenStudy (henryblah):
Try multiplying the 2nd equation by 2. Then subtracting one from the other, to find y.
OpenStudy (precal):
actually you should multiply 2nd equation by -2 and then add them together.
OpenStudy (precal):
people always forget what subtract from means
OpenStudy (henryblah):
I suppose so, but I like to use all 4 operations I guess :)
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