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n+n/2=9
We simplify the equation to the form, which is simple to understand
n+n/2=9
We move all terms containing n to the left and all other terms to the right.
+1n + 0.5n=+9
We simplify left and right side of the equation.
+1.5n=+9
We divide both sides of the equation by 1.5 to get n.
n=6
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