140=4x+4(7x-21)

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Solution for 140=4x+4(7x-21) equation: 



140=4x+4(7x-21)

We move all terms to the left:

140-(4x+4(7x-21))=0



We calculate terms in parentheses: -(4x+4(7x-21)), so:

4x+4(7x-21)

We multiply parentheses

4x+28x-84

We add all the numbers together, and all the variables

32x-84

Back to the equation:

-(32x-84)



We get rid of parentheses

-32x+84+140=0

We add all the numbers together, and all the variables

-32x+224=0

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

-32x=-224

x=-224/-32

x=+7

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