-109=-8x-21

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Solution for -109=-8x-21 equation: 



-109=-8x-21

We move all terms to the left:

-109-(-8x-21)=0

We get rid of parentheses

8x+21-109=0

We add all the numbers together, and all the variables

8x-88=0

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

8x=88

x=88/8

x=11

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