Chapter 3 - Adding and Subtracting Fractions - 3.5 Order Relation and the Order of Operations - 3.5 Exercises - Page 245: 65

$\frac{1}{4}$

$(\frac{7}{8} - \frac{1}{4}) - \frac{2}{3}(\frac{3}{4})^2$ = $(\frac{7}{8} - \frac{2}{8}) - \frac{2}{3}(\frac{9}{16})$ = $\frac{5}{8} - \frac{18}{48}$ = $\frac{5}{8} - \frac{3}{8}$ = $\frac{2}{8}$ = $\frac{1}{4}$