-2x-(-3)=21

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Solution for -2x-(-3)=21 equation: 



-2x-(-3)=21

We move all terms to the left:

-2x-(-3)-(21)=0

determiningTheFunctionDomain
-2x-21-(-3)=0

We add all the numbers together, and all the variables

-2x-18=0

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

-2x=18

x=18/-2

x=-9

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