4(a+3)-2(a+6)=30

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Solution for 4(a+3)-2(a+6)=30 equation: 



4(a+3)-2(a+6)=30

We move all terms to the left:

4(a+3)-2(a+6)-(30)=0

We multiply parentheses

4a-2a+12-12-30=0

We add all the numbers together, and all the variables

2a-30=0

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

2a=30

a=30/2

a=15

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