(3x+6)+(6x+12)=45

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Solution for (3x+6)+(6x+12)=45 equation: 



(3x+6)+(6x+12)=45

We move all terms to the left:

(3x+6)+(6x+12)-(45)=0

We get rid of parentheses

3x+6x+6+12-45=0

We add all the numbers together, and all the variables

9x-27=0

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

9x=27

x=27/9

x=3

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