-3x-(-4)=21

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Solution for -3x-(-4)=21 equation: 



-3x-(-4)=21

We move all terms to the left:

-3x-(-4)-(21)=0

determiningTheFunctionDomain
-3x-21-(-4)=0

We add all the numbers together, and all the variables

-3x-17=0

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

-3x=17

x=17/-3

x=-5+2/3

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