30n-40=-70

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Solution for 30n-40=-70 equation: 



30n-40=-70

We move all terms to the left:

30n-40-(-70)=0

We add all the numbers together, and all the variables

30n+30=0

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

30n=-30

n=-30/30

n=-1

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