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9+(1/2)n=21
We simplify the equation to the form, which is simple to understand
9+(1/2)n=21
Simplifying:
9+( + 0.5)*n=21
Reorder the terms in parentheses
9+( + 0.5n)=21
Remove unnecessary parentheses
+9 + 0.5n=+21
We move all terms containing n to the left and all other terms to the right.
+ 0.5n=+21-9
We simplify left and right side of the equation.
+ 0.5n=+12
We divide both sides of the equation by 0.5 to get n.
n=24
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