n-(-9)=18

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Solution for n-(-9)=18 equation: 



n-(-9)=18

We move all terms to the left:

n-(-9)-(18)=0

determiningTheFunctionDomain
n-18-(-9)=0

We add all the numbers together, and all the variables

n-9=0

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

n=9

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