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OpenStudy (anonymous):
7(-3x + 7) = -(-3x + -73)
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OpenStudy (anonymous):
distribute the 7 on lhs and -1 on rhs and should be simpler.
OpenStudy (anonymous):
7(-3x+7)=-(-3x+-73) -21x+49=3x+73 -21x-3x=73-49 -24x=24 x=-1
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