21-x=x+1

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Solution for 21-x=x+1 equation: 



21-x=x+1

We move all terms to the left:

21-x-(x+1)=0

We add all the numbers together, and all the variables

-1x-(x+1)+21=0

We get rid of parentheses

-1x-x-1+21=0

We add all the numbers together, and all the variables

-2x+20=0

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

-2x=-20

x=-20/-2

x=+10

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