X+7+5=3x

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Solution for X+7+5=3x equation: 



X+7+5=3X

We move all terms to the left:

X+7+5-(3X)=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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