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OpenStudy (anonymous):
Solve using substitution: -x + 2y = -7 10y − 5x = 21
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OpenStudy (mertsj):
Replace x in the second equation with 2y+7 from the first equation.
OpenStudy (anonymous):
i got y+35=21
OpenStudy (anonymous):
@Mertsj
OpenStudy (mertsj):
|dw:1374543223490:dw|
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