20-(-12)=n

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Solution for 20-(-12)=n equation: 



20-(-12)=n

We move all terms to the left:

20-(-12)-(n)=0

We add all the numbers together, and all the variables

-1n+32=0

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

-n=-32

n=-32/-1

n=+32

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