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13-01-2015
Mathematics

Answered

what is y=x-7 3x-3y=21 by solving by substitution

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Johnathanochoa6 Johnathanochoa6

13-01-2015

Ok first you really have plug in x-7 into y
So it turns into 3x-3x-21=21 I'm pretty sure you can figure the rest

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