-5x-21=4x-3x

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Solution for -5x-21=4x-3x equation: 



-5x-21=4x-3x

We move all terms to the left:

-5x-21-(4x-3x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-5x-x-21=0

We add all the numbers together, and all the variables

-6x-21=0

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

-6x=21

x=21/-6

x=-3+1/2

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