21-2x=x+36

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Solution for 21-2x=x+36 equation: 



21-2x=x+36

We move all terms to the left:

21-2x-(x+36)=0

We get rid of parentheses

-2x-x-36+21=0

We add all the numbers together, and all the variables

-3x-15=0

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

-3x=15

x=15/-3

x=-5

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