-7(-3+a)=39-4a

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Solution for -7(-3+a)=39-4a equation: 



-7(-3+a)=39-4a

We move all terms to the left:

-7(-3+a)-(39-4a)=0

We add all the numbers together, and all the variables

-7(a-3)-(-4a+39)=0

We multiply parentheses

-7a-(-4a+39)+21=0

We get rid of parentheses

-7a+4a-39+21=0

We add all the numbers together, and all the variables

-3a-18=0

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

-3a=18

a=18/-3

a=-6

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