6n-30=90

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Solution for 6n-30=90 equation: 



6n-30=90

We move all terms to the left:

6n-30-(90)=0

We add all the numbers together, and all the variables

6n-120=0

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

6n=120

n=120/6

n=20

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