20-2nn=7

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Solution for 20-2nn=7 equation:



20-2nn=7
We move all terms to the left:
20-2nn-(7)=0
We add all the numbers together, and all the variables
-2nn+13=0
We move all terms containing n to the left, all other terms to the right
-2nn=-13
n=-13/1
n=-13

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