x+3=3x+18

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



x+3=3x+18

We move all terms to the left:

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

We get rid of parentheses

x-3x-18+3=0

We add all the numbers together, and all the variables

-2x-15=0

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

-2x=15

x=15/-2

x=-7+1/2

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