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n/2-9=2n-36
We move all terms to the left:
n/2-9-(2n-36)=0
We get rid of parentheses
n/2-2n+36-9=0
We multiply all the terms by the denominator
n-2n*2+36*2-9*2=0
We add all the numbers together, and all the variables
n-2n*2+54=0
Wy multiply elements
n-4n+54=0
We add all the numbers together, and all the variables
-3n+54=0
We move all terms containing n to the left, all other terms to the right
-3n=-54
n=-54/-3
n=+18
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