21=2x-17

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Solution for 21=2x-17 equation: 



21=2x-17

We move all terms to the left:

21-(2x-17)=0

We get rid of parentheses

-2x+17+21=0

We add all the numbers together, and all the variables

-2x+38=0

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

-2x=-38

x=-38/-2

x=+19

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