-12=10n-40n-3

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Solution for -12=10n-40n-3 equation: 



-12=10n-40n-3

We move all terms to the left:

-12-(10n-40n-3)=0

We add all the numbers together, and all the variables

-(-30n-3)-12=0

We get rid of parentheses

30n+3-12=0

We add all the numbers together, and all the variables

30n-9=0

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

30n=9

n=9/30

n=3/10

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