7a-3=4(3a+1)-(5a+7)

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Solution for 7a-3=4(3a+1)-(5a+7) equation: 



7a-3=4(3a+1)-(5a+7)

We move all terms to the left:

7a-3-(4(3a+1)-(5a+7))=0



We calculate terms in parentheses: -(4(3a+1)-(5a+7)), so:

4(3a+1)-(5a+7)

We multiply parentheses

12a-(5a+7)+4

We get rid of parentheses

12a-5a-7+4

We add all the numbers together, and all the variables

7a-3

Back to the equation:

-(7a-3)



We get rid of parentheses

7a-7a+3-3=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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