102=-3(1-5a)

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Solution for 102=-3(1-5a) equation: 



102=-3(1-5a)

We move all terms to the left:

102-(-3(1-5a))=0

We add all the numbers together, and all the variables

-(-3(-5a+1))+102=0



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

-3(-5a+1)

We multiply parentheses

15a-3

Back to the equation:

-(15a-3)



We get rid of parentheses

-15a+3+102=0

We add all the numbers together, and all the variables

-15a+105=0

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

-15a=-105

a=-105/-15

a=+7

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