X+18=2x+72

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Solution for X+18=2x+72 equation: 



X+18=2X+72

We move all terms to the left:

X+18-(2X+72)=0

We get rid of parentheses

X-2X-72+18=0

We add all the numbers together, and all the variables

-1X-54=0

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

-X=54

X=54/-1

X=-54

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