138=x+2x+x+30

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Solution for 138=x+2x+x+30 equation: 



138=x+2x+x+30

We move all terms to the left:

138-(x+2x+x+30)=0

We add all the numbers together, and all the variables

-(4x+30)+138=0

We get rid of parentheses

-4x-30+138=0

We add all the numbers together, and all the variables

-4x+108=0

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

-4x=-108

x=-108/-4

x=+27

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