a+2(6-2a)=18

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Solution for a+2(6-2a)=18 equation: 



a+2(6-2a)=18

We move all terms to the left:

a+2(6-2a)-(18)=0

We add all the numbers together, and all the variables

a+2(-2a+6)-18=0

We multiply parentheses

a-4a+12-18=0

We add all the numbers together, and all the variables

-3a-6=0

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

-3a=6

a=6/-3

a=-2

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