3(x+2)+4x=12

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Solution for 3(x+2)+4x=12 equation: 



3(x+2)+4x=12

We move all terms to the left:

3(x+2)+4x-(12)=0

We add all the numbers together, and all the variables

4x+3(x+2)-12=0

We multiply parentheses

4x+3x+6-12=0

We add all the numbers together, and all the variables

7x-6=0

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

7x=6

x=6/7

x=6/7

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