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20(1/5n-3/4)+9n=0
We simplify the equation to the form, which is simple to understand
20(1/5n-3/4)+9n=0
Reorder the terms in parentheses
+(/5n-15)+9n=0
Remove unnecessary parentheses
+/5n-15+9n=0
We move all terms containing n to the left and all other terms to the right.
+5n+9n=0+15
We simplify left and right side of the equation.
+14n=+15
We divide both sides of the equation by 14 to get n.
n=1.0714285714286
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