3x+3x+12=4x+18

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Solution for 3x+3x+12=4x+18 equation: 



3x+3x+12=4x+18

We move all terms to the left:

3x+3x+12-(4x+18)=0

We add all the numbers together, and all the variables

6x-(4x+18)+12=0

We get rid of parentheses

6x-4x-18+12=0

We add all the numbers together, and all the variables

2x-6=0

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

2x=6

x=6/2

x=3

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