(2x-20)=(-x+100)

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Solution for (2x-20)=(-x+100) equation: 



(2x-20)=(-x+100)

We move all terms to the left:

(2x-20)-((-x+100))=0

We add all the numbers together, and all the variables

(2x-20)-((-1x+100))=0

We get rid of parentheses

2x-((-1x+100))-20=0



We calculate terms in parentheses: -((-1x+100)), so:

(-1x+100)

We get rid of parentheses

-1x+100

Back to the equation:

-(-1x+100)



We get rid of parentheses

2x+1x-100-20=0

We add all the numbers together, and all the variables

3x-120=0

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

3x=120

x=120/3

x=40

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