-6x-21=-9x+7

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Solution for -6x-21=-9x+7 equation: 



-6x-21=-9x+7

We move all terms to the left:

-6x-21-(-9x+7)=0

We get rid of parentheses

-6x+9x-7-21=0

We add all the numbers together, and all the variables

3x-28=0

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

3x=28

x=28/3

x=9+1/3

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