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Mathematics 8 Online
OpenStudy (anonymous):

4m+n=10 m-9n=21

OpenStudy (anonymous):

Multiply the first equation by 9 making it 36m +9n = 90 Line it up with m - 9n = 21 Solve by elimination ______________ See how you have a column withopposite coefficients for the "n"? Now solve for m 37m = 111 Once you have m, plug it back into one of the original equations to find the n.

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