-20=30+2x

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Solution for -20=30+2x equation: 



-20=30+2x

We move all terms to the left:

-20-(30+2x)=0

We add all the numbers together, and all the variables

-(2x+30)-20=0

We get rid of parentheses

-2x-30-20=0

We add all the numbers together, and all the variables

-2x-50=0

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

-2x=50

x=50/-2

x=-25

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