x+42=3x+6

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Solution for x+42=3x+6 equation: 



x+42=3x+6

We move all terms to the left:

x+42-(3x+6)=0

We get rid of parentheses

x-3x-6+42=0

We add all the numbers together, and all the variables

-2x+36=0

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

-2x=-36

x=-36/-2

x=+18

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