-12(5+3a)=-9a-3(8+12a)

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Solution for -12(5+3a)=-9a-3(8+12a) equation: 



-12(5+3a)=-9a-3(8+12a)

We move all terms to the left:

-12(5+3a)-(-9a-3(8+12a))=0

We add all the numbers together, and all the variables

-12(3a+5)-(-9a-3(12a+8))=0

We multiply parentheses

-36a-(-9a-3(12a+8))-60=0



We calculate terms in parentheses: -(-9a-3(12a+8)), so:

-9a-3(12a+8)

We multiply parentheses

-9a-36a-24

We add all the numbers together, and all the variables

-45a-24

Back to the equation:

-(-45a-24)



We get rid of parentheses

-36a+45a+24-60=0

We add all the numbers together, and all the variables

9a-36=0

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

9a=36

a=36/9

a=4

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