-21=-5x+2-3

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Solution for -21=-5x+2-3 equation: 



-21=-5x+2-3

We move all terms to the left:

-21-(-5x+2-3)=0

We add all the numbers together, and all the variables

-(-5x-1)-21=0

We get rid of parentheses

5x+1-21=0

We add all the numbers together, and all the variables

5x-20=0

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

5x=20

x=20/5

x=4

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