## Finite Math and Applied Calculus (6th Edition)

$\frac{2}{3}$
1. Undo the parenthesis in the denominator first. ($20 \div12$) -1 2. Divide the numbers in the parenthesis. ($\frac{5}{3}$)-1 3. Common denominator for both numbers. ($\frac{5}{3}$)- ($\frac{3}{3}$) 4. Subtract. $\frac{2}{3}$