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Mathematics 9 Online
OpenStudy (anonymous):

SOLVE. 4x-5y=-28 2x-y=-5

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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