-21=-2x-11

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Solution for -21=-2x-11 equation: 



-21=-2x-11

We move all terms to the left:

-21-(-2x-11)=0

We get rid of parentheses

2x+11-21=0

We add all the numbers together, and all the variables

2x-10=0

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

2x=10

x=10/2

x=5

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