21-2x=10+9x

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Solution for 21-2x=10+9x equation: 



21-2x=10+9x

We move all terms to the left:

21-2x-(10+9x)=0

We add all the numbers together, and all the variables

-2x-(9x+10)+21=0

We get rid of parentheses

-2x-9x-10+21=0

We add all the numbers together, and all the variables

-11x+11=0

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

-11x=-11

x=-11/-11

x=1

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