138=6(1-7x)

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Solution for 138=6(1-7x) equation: 



138=6(1-7x)

We move all terms to the left:

138-(6(1-7x))=0

We add all the numbers together, and all the variables

-(6(-7x+1))+138=0



We calculate terms in parentheses: -(6(-7x+1)), so:

6(-7x+1)

We multiply parentheses

-42x+6

Back to the equation:

-(-42x+6)



We get rid of parentheses

42x-6+138=0

We add all the numbers together, and all the variables

42x+132=0

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

42x=-132

x=-132/42

x=-3+1/7

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