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13+n/2-9=54
We simplify the equation to the form, which is simple to understand
13+n/2-9=54
We move all terms containing n to the left and all other terms to the right.
+ 0.5n=+54-13+9
We simplify left and right side of the equation.
+ 0.5n=+50
We divide both sides of the equation by 0.5 to get n.
n=100
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