-7(-1+3a)=5(3-5a)=

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Solution for -7(-1+3a)=5(3-5a)= equation: 



-7(-1+3a)=5(3-5a)=

We move all terms to the left:

-7(-1+3a)-(5(3-5a))=0

We add all the numbers together, and all the variables

-7(3a-1)-(5(-5a+3))=0

We multiply parentheses

-21a-(5(-5a+3))+7=0



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

5(-5a+3)

We multiply parentheses

-25a+15

Back to the equation:

-(-25a+15)



We get rid of parentheses

-21a+25a-15+7=0

We add all the numbers together, and all the variables

4a-8=0

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

4a=8

a=8/4

a=2

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