-5x-21=x-3

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



-5x-21=x-3

We move all terms to the left:

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

We get rid of parentheses

-5x-x+3-21=0

We add all the numbers together, and all the variables

-6x-18=0

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

-6x=18

x=18/-6

x=-3

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