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5n-7=5n-10+3
We move all terms to the left:
5n-7-(5n-10+3)=0
We add all the numbers together, and all the variables
5n-(5n-7)-7=0
We get rid of parentheses
5n-5n+7-7=0
We add all the numbers together, and all the variables
=0
n=0/1
n=0
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