X+2x=12.75

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Solution for X+2x=12.75 equation: 



X+2X=12.75

We move all terms to the left:

X+2X-(12.75)=0

We add all the numbers together, and all the variables

3X-12.75=0

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

3X=12.75

X=12.75/3

X=4+0.75/3

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