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OpenStudy (anonymous):
how do you solve -8 < 5x + 7 < 12
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OpenStudy (anonymous):
u need to isolate x here. so first, from 5x+7, we need to remove 7. so subtract 7 all throughout.
OpenStudy (anonymous):
so u'll get, -8-7 < 5x + 7 - 7 < 12 - 7 = -15 < 5x < 5 now u still have 5 in 5x. try isolating it.
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