30n+40=-170

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Solution for 30n+40=-170 equation: 



30n+40=-170

We move all terms to the left:

30n+40-(-170)=0

We add all the numbers together, and all the variables

30n+210=0

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

30n=-210

n=-210/30

n=-7

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