Chapter B, Problem 33E

To determine

(a)

To calculate:

The value of $\frac{\frac{9-12}{5}+7}{2}$ by hand.

To determine

(b)

To calculate:

The value of $\frac{\frac{9-12}{5}+7}{2}$ with a calculator.

To determine

(c)

To calculate:

The value of $\frac{\frac{9-12}{5}+7}{2}$.