-21x-(-9)=-75

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Solution for -21x-(-9)=-75 equation: 



-21x-(-9)=-75

We move all terms to the left:

-21x-(-9)-(-75)=0

We add all the numbers together, and all the variables

-21x+84=0

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

-21x=-84

x=-84/-21

x=+4

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