-9x-9=+21

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



-9x-9=+21

We move all terms to the left:

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

We add all the numbers together, and all the variables

-9x-9-21=0

We add all the numbers together, and all the variables

-9x-30=0

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

-9x=30

x=30/-9

x=-3+1/3

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