-111=13(7+5a)+3(2+13a)

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Solution for -111=13(7+5a)+3(2+13a) equation: 



-111=13(7+5a)+3(2+13a)

We move all terms to the left:

-111-(13(7+5a)+3(2+13a))=0

We add all the numbers together, and all the variables

-(13(5a+7)+3(13a+2))-111=0



We calculate terms in parentheses: -(13(5a+7)+3(13a+2)), so:

13(5a+7)+3(13a+2)

We multiply parentheses

65a+39a+91+6

We add all the numbers together, and all the variables

104a+97

Back to the equation:

-(104a+97)



We get rid of parentheses

-104a-97-111=0

We add all the numbers together, and all the variables

-104a-208=0

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

-104a=208

a=208/-104

a=-2

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