-39=-3(4a+5)-3(-3a+1)

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Solution for -39=-3(4a+5)-3(-3a+1) equation: 



-39=-3(4a+5)-3(-3a+1)

We move all terms to the left:

-39-(-3(4a+5)-3(-3a+1))=0



We calculate terms in parentheses: -(-3(4a+5)-3(-3a+1)), so:

-3(4a+5)-3(-3a+1)

We multiply parentheses

-12a+9a-15-3

We add all the numbers together, and all the variables

-3a-18

Back to the equation:

-(-3a-18)



We get rid of parentheses

3a+18-39=0

We add all the numbers together, and all the variables

3a-21=0

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

3a=21

a=21/3

a=7

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