-30=-50+x

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Solution for -30=-50+x equation: 



-30=-50+x

We move all terms to the left:

-30-(-50+x)=0

We add all the numbers together, and all the variables

-(x-50)-30=0

We get rid of parentheses

-x+50-30=0

We add all the numbers together, and all the variables

-1x+20=0

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

-x=-20

x=-20/-1

x=+20

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