-21+4x=2x+13

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Solution for -21+4x=2x+13 equation: 



-21+4x=2x+13

We move all terms to the left:

-21+4x-(2x+13)=0

We get rid of parentheses

4x-2x-13-21=0

We add all the numbers together, and all the variables

2x-34=0

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

2x=34

x=34/2

x=17

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