-27+21=7x+9x

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Solution for -27+21=7x+9x equation: 



-27+21=7x+9x

We move all terms to the left:

-27+21-(7x+9x)=0

We add all the numbers together, and all the variables

-(+16x)-27+21=0

We add all the numbers together, and all the variables

-(+16x)-6=0

We get rid of parentheses

-16x-6=0

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

-16x=6

x=6/-16

x=-3/8

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