x-20=5(7-4x)

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Solution for x-20=5(7-4x) equation: 



x-20=5(7-4x)

We move all terms to the left:

x-20-(5(7-4x))=0

We add all the numbers together, and all the variables

x-(5(-4x+7))-20=0



We calculate terms in parentheses: -(5(-4x+7)), so:

5(-4x+7)

We multiply parentheses

-20x+35

Back to the equation:

-(-20x+35)



We get rid of parentheses

x+20x-35-20=0

We add all the numbers together, and all the variables

21x-55=0

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

21x=55

x=55/21

x=2+13/21

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