115=5a+5(7a-1)

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Solution for 115=5a+5(7a-1) equation: 



115=5a+5(7a-1)

We move all terms to the left:

115-(5a+5(7a-1))=0



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

5a+5(7a-1)

We multiply parentheses

5a+35a-5

We add all the numbers together, and all the variables

40a-5

Back to the equation:

-(40a-5)



We get rid of parentheses

-40a+5+115=0

We add all the numbers together, and all the variables

-40a+120=0

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

-40a=-120

a=-120/-40

a=+3

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