30=x+(-20)

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Solution for 30=x+(-20) equation: 



30=x+(-20)

We move all terms to the left:

30-(x+(-20))=0



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

x+(-20)

We add all the numbers together, and all the variables

x-20

Back to the equation:

-(x-20)



We get rid of parentheses

-x+20+30=0

We add all the numbers together, and all the variables

-1x+50=0

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

-x=-50

x=-50/-1

x=+50

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