91=-7(3a)

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Solution for 91=-7(3a) equation: 



91=-7(3a)

We move all terms to the left:

91-(-7(3a))=0

We get rid of parentheses

73a+91=0

We move all terms containing a to the left, all other terms to the right

73a=-91

a=-91/73

a=-1+18/73

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