x=21x-4

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Solution for x=21x-4 equation: 



x=21x-4

We move all terms to the left:

x-(21x-4)=0

We get rid of parentheses

x-21x+4=0

We add all the numbers together, and all the variables

-20x+4=0

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

-20x=-4

x=-4/-20

x=1/5

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