9n+18=-72

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Solution for 9n+18=-72 equation: 



9n+18=-72

We move all terms to the left:

9n+18-(-72)=0

We add all the numbers together, and all the variables

9n+90=0

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

9n=-90

n=-90/9

n=-10

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