3. Вычислите: а) |-1,2| * |0,6| : |-9|; б) |-1 2/5| + |-3 7/15| - |-2 1/3|.

а) |-1,2| * |0,6| : |-9| = 1.2 * 0.6 / 9 = 0.72 / 9 = 0.08 б) |-1 \frac{2}{5}| + |-3 \frac{7}{15}| - |-2 \frac{1}{3}| = 1 \frac{2}{5} + 3 \frac{7}{15} - 2 \frac{1}{3} = \frac{7}{5} + \frac{52}{15} - \frac{7}{3} = \frac{21}{15} + \frac{52}{15} - \frac{35}{15} = \frac{21 + 52 - 35}{15} = \frac{38}{15} = 2 \frac{8}{15}