-27=21+8x

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Solution for -27=21+8x equation: 



-27=21+8x

We move all terms to the left:

-27-(21+8x)=0

We add all the numbers together, and all the variables

-(8x+21)-27=0

We get rid of parentheses

-8x-21-27=0

We add all the numbers together, and all the variables

-8x-48=0

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

-8x=48

x=48/-8

x=-6

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