4(x+20)=(20x+400)

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Solution for 4(x+20)=(20x+400) equation: 



4(x+20)=(20x+400)

We move all terms to the left:

4(x+20)-((20x+400))=0

We multiply parentheses

4x-((20x+400))+80=0



We calculate terms in parentheses: -((20x+400)), so:

(20x+400)

We get rid of parentheses

20x+400

Back to the equation:

-(20x+400)



We get rid of parentheses

4x-20x-400+80=0

We add all the numbers together, and all the variables

-16x-320=0

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

-16x=320

x=320/-16

x=-20

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