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n-0.20n=512.40
We simplify the equation to the form, which is simple to understand
n-0.20n=512.40
We move all terms containing n to the left and all other terms to the right.
+1n-0.2n=+512.4
We simplify left and right side of the equation.
+ 0.8n=+512.4
We divide both sides of the equation by 0.8 to get n.
n=640.5
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