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n/20-4=3
We simplify the equation to the form, which is simple to understand
n/20-4=3
We move all terms containing n to the left and all other terms to the right.
+ 0.05n=+3+4
We simplify left and right side of the equation.
+ 0.05n=+7
We divide both sides of the equation by 0.05 to get n.
n=140
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