13+7a=5(a+5)

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Solution for 13+7a=5(a+5) equation: 



13+7a=5(a+5)

We move all terms to the left:

13+7a-(5(a+5))=0



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

5(a+5)

We multiply parentheses

5a+25

Back to the equation:

-(5a+25)



We get rid of parentheses

7a-5a-25+13=0

We add all the numbers together, and all the variables

2a-12=0

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

2a=12

a=12/2

a=6

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