X+2+3*x=18

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Solution for X+2+3*x=18 equation: 



X+2+3X=18

We move all terms to the left:

X+2+3X-(18)=0

We add all the numbers together, and all the variables

4X-16=0

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

4X=16

X=16/4

X=4

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