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OpenStudy (anonymous):
-3(b-7) for b=4
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OpenStudy (anonymous):
9? 4-7 equals -3 then multiplied by -3 makes it positive.
OpenStudy (jackellyn):
substitute 4 wherever you see a b in the equation so -3(4-7) PEMDAS says parenthesis first! -3(-3) Multiply next! 9
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