-12=77(2a-3)-(8a-9)

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Solution for -12=77(2a-3)-(8a-9) equation: 



-12=77(2a-3)-(8a-9)

We move all terms to the left:

-12-(77(2a-3)-(8a-9))=0



We calculate terms in parentheses: -(77(2a-3)-(8a-9)), so:

77(2a-3)-(8a-9)

We multiply parentheses

154a-(8a-9)-231

We get rid of parentheses

154a-8a+9-231

We add all the numbers together, and all the variables

146a-222

Back to the equation:

-(146a-222)



We get rid of parentheses

-146a+222-12=0

We add all the numbers together, and all the variables

-146a+210=0

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

-146a=-210

a=-210/-146

a=1+32/73

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