0=-7x+7(3x-20)

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Solution for 0=-7x+7(3x-20) equation: 



0=-7x+7(3x-20)

We move all terms to the left:

0-(-7x+7(3x-20))=0

We add all the numbers together, and all the variables

-(-7x+7(3x-20))=0



We calculate terms in parentheses: -(-7x+7(3x-20)), so:

-7x+7(3x-20)

We multiply parentheses

-7x+21x-140

We add all the numbers together, and all the variables

14x-140

Back to the equation:

-(14x-140)



We get rid of parentheses

-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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