[tex]b = ( \frac{1}{4} - \frac{2}{5} ) \times (7 + \frac{37}{9} ) + {( \frac{1}{3} )}^{2} = \frac{ - 3}{20} \times \frac{100}{9} + \frac{1}{9} = \frac{ - 1}{2} \times \frac{10}{3} + \frac{1}{9} = \frac{ - 10}{6} + \frac{1}{9} = \frac{ 84}{54} = \frac{14}{9} [/tex]
