138=7x+7x-2

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Solution for 138=7x+7x-2 equation: 



138=7x+7x-2

We move all terms to the left:

138-(7x+7x-2)=0

We add all the numbers together, and all the variables

-(14x-2)+138=0

We get rid of parentheses

-14x+2+138=0

We add all the numbers together, and all the variables

-14x+140=0

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

-14x=-140

x=-140/-14

x=+10

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