30-2x=20-x

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Solution for 30-2x=20-x equation: 



30-2x=20-x

We move all terms to the left:

30-2x-(20-x)=0

We add all the numbers together, and all the variables

-2x-(-1x+20)+30=0

We get rid of parentheses

-2x+1x-20+30=0

We add all the numbers together, and all the variables

-1x+10=0

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

-x=-10

x=-10/-1

x=+10

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