72=4(3a-3)

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Solution for 72=4(3a-3) equation: 



72=4(3a-3)

We move all terms to the left:

72-(4(3a-3))=0



We calculate terms in parentheses: -(4(3a-3)), so:

4(3a-3)

We multiply parentheses

12a-12

Back to the equation:

-(12a-12)



We get rid of parentheses

-12a+12+72=0

We add all the numbers together, and all the variables

-12a+84=0

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

-12a=-84

a=-84/-12

a=+7

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