21+x=2x-11

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Solution for 21+x=2x-11 equation: 



21+x=2x-11

We move all terms to the left:

21+x-(2x-11)=0

We get rid of parentheses

x-2x+11+21=0

We add all the numbers together, and all the variables

-1x+32=0

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

-x=-32

x=-32/-1

x=+32

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