-2x+21=2x-3

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Solution for -2x+21=2x-3 equation: 



-2x+21=2x-3

We move all terms to the left:

-2x+21-(2x-3)=0

We get rid of parentheses

-2x-2x+3+21=0

We add all the numbers together, and all the variables

-4x+24=0

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

-4x=-24

x=-24/-4

x=+6

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