3x+6-x=18

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Solution for 3x+6-x=18 equation: 



3x+6-x=18

We move all terms to the left:

3x+6-x-(18)=0

We add all the numbers together, and all the variables

2x-12=0

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

2x=12

x=12/2

x=6

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