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-21=n/3+3
We simplify the equation to the form, which is simple to understand
-21=n/3+3
Simplifying:
-21=0.333333333333n+3
We move all terms containing n to the left and all other terms to the right.
-0.333333333333n=+3+21
We simplify left and right side of the equation.
-0.333333333333n=+24
We divide both sides of the equation by -00.333333333333 to get n.
n=-72.0000000001
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