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OpenStudy (anonymous):
13x+7(-3x-1)=-63
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OpenStudy (anonymous):
The first step is to multiply out.... by distributing... the "7 times" in front of that parenthesis. 13x + 7(-3x - 1) = -63 <<-- original equation 13x + 7(-3) + 7(-1) = -63 <<-- after distributing the "times 7"
OpenStudy (anonymous):
Open brackets, solve the given property and equate to -63.
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