(x-20)=3x

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Solution for (x-20)=3x equation: 



(x-20)=3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-3x+(x-20)=0

We get rid of parentheses

-3x+x-20=0

We add all the numbers together, and all the variables

-2x-20=0

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

-2x=20

x=20/-2

x=-10

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