3x+x+6=12

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Solution for 3x+x+6=12 equation: 



3x+x+6=12

We move all terms to the left:

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

We add all the numbers together, and all the variables

4x-6=0

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

4x=6

x=6/4

x=1+1/2

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