Пожалуйста помогите!:3 номер 392)

1) $\frac{35(28 + 32)}{60 * 15} = \frac{7(28 + 32) }{60 * 3} = \frac{7 * 60}{60 * 3} = \frac{7}{3} = 2 \frac{1}{3}$
2) $\frac{57(62-34)}{28 * 19} = \frac{3(62-34)}{28} = \frac{3 * 28}{28} = 3$
3) $\frac{48(31+19)}{16 * 100} = \frac{3(31+19)}{100} = \frac{3 * 50}{100} = \frac{3}{2} = 1 \frac{1}{2}$ = 1,5
4) $\frac{17(96 - 24)}{48 * 85} = \frac{96 - 24}{48 * 5} = \frac{72}{48 * 5} = \frac{9}{6 * 5} = \frac{3}{10}$