-103=5a-7(1-a)

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Solution for -103=5a-7(1-a) equation: 



-103=5a-7(1-a)

We move all terms to the left:

-103-(5a-7(1-a))=0

We add all the numbers together, and all the variables

-(5a-7(-1a+1))-103=0



We calculate terms in parentheses: -(5a-7(-1a+1)), so:

5a-7(-1a+1)

We multiply parentheses

5a+7a-7

We add all the numbers together, and all the variables

12a-7

Back to the equation:

-(12a-7)



We get rid of parentheses

-12a+7-103=0

We add all the numbers together, and all the variables

-12a-96=0

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

-12a=96

a=96/-12

a=-8

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