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B-4Z Over 7 = a solve For b Literal equations

User Romaan
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(b-4z)/(7)=a\ \ \ \ \ \ \ |multiply\ both\ sides\ by\ 7\\\\b-4z=7a\ \ \ \ \ \ |add\ 4z\ to\ both\ sides\\\\\boxed{b=7a+4z}
User Excellent
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