-21=2x-8+3x

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Solution for -21=2x-8+3x equation: 



-21=2x-8+3x

We move all terms to the left:

-21-(2x-8+3x)=0

We add all the numbers together, and all the variables

-(5x-8)-21=0

We get rid of parentheses

-5x+8-21=0

We add all the numbers together, and all the variables

-5x-13=0

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

-5x=13

x=13/-5

x=-2+3/5

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