3(a-12)=27

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Solution for 3(a-12)=27 equation: 



3(a-12)=27

We move all terms to the left:

3(a-12)-(27)=0

We multiply parentheses

3a-36-27=0

We add all the numbers together, and all the variables

3a-63=0

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

3a=63

a=63/3

a=21

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