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1=99-2n
We move all terms to the left:
1-(99-2n)=0
We add all the numbers together, and all the variables
-(-2n+99)+1=0
We get rid of parentheses
2n-99+1=0
We add all the numbers together, and all the variables
2n-98=0
We move all terms containing n to the left, all other terms to the right
2n=98
n=98/2
n=49
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