30n-81=189

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Solution for 30n-81=189 equation: 



30n-81=189

We move all terms to the left:

30n-81-(189)=0

We add all the numbers together, and all the variables

30n-270=0

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

30n=270

n=270/30

n=9

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