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4/3(7-n)=21
We simplify the equation to the form, which is simple to understand
4/3(7-n)=21
Simplifying:
+1.33333333333*(7-n)=21
Reorder the terms in parentheses
+(+9.33333333333-1.33333333333n)=21
Remove unnecessary parentheses
+9.33333333333-1.33333333333n=+21
We move all terms containing n to the left and all other terms to the right.
-1.33333333333n=+21-9.33333333333
We simplify left and right side of the equation.
-1.33333333333n=+11.6666666667
We divide both sides of the equation by -1.33333333333 to get n.
n=-8.75000000002
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