35-7a=-7(1+3a)

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Solution for 35-7a=-7(1+3a) equation: 



35-7a=-7(1+3a)

We move all terms to the left:

35-7a-(-7(1+3a))=0

We add all the numbers together, and all the variables

-7a-(-7(3a+1))+35=0



We calculate terms in parentheses: -(-7(3a+1)), so:

-7(3a+1)

We multiply parentheses

-21a-7

Back to the equation:

-(-21a-7)



We get rid of parentheses

-7a+21a+7+35=0

We add all the numbers together, and all the variables

14a+42=0

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

14a=-42

a=-42/14

a=-3

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