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n=20-n/2
We move all terms to the left:
n-(20-n/2)=0
We add all the numbers together, and all the variables
n-(-n/2+20)=0
We get rid of parentheses
n+n/2-20=0
We multiply all the terms by the denominator
n*2+n-20*2=0
We add all the numbers together, and all the variables
n+n*2-40=0
Wy multiply elements
n+2n-40=0
We add all the numbers together, and all the variables
3n-40=0
We move all terms containing n to the left, all other terms to the right
3n=40
n=40/3
n=13+1/3
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