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

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



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

We move all terms to the left:

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

We multiply parentheses

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



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

5(a+3)

We multiply parentheses

5a+15

Back to the equation:

-(5a+15)



We get rid of parentheses

3a-5a-15-21=0

We add all the numbers together, and all the variables

-2a-36=0

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

-2a=36

a=36/-2

a=-18

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