Вычислите:
а)

0, 8 + (- \frac{5}{6})

;
б)

- \frac{1}{50} + 1, 37

;
в)

- 7, 11 - \frac{1}{2}

;
г)

\frac{2}{3} - 0, 8

;
д)

- \frac{2}{7} * 1, 4

;
е)

- 0, 24 * (- \frac{3}{16})

;
ж)

4, 2 : (- \frac{6}{7})

;
з)

0, 16 : 2 \frac{2}{5}

;
и)

3 \frac{1}{5} : 0, 64

Вычислите: а) 0 , 8 + ( − 5 6 ) ; б) − 1 50 + 1 , 37 ; в) − 7 , 11 − 1 2 ; г) 2 3 − 0 , 8 ; д) − 2 7 ∗ 1 , 4 ; е) − 0 , 24 ∗ ( − 3 16 ) ; ж) 4 , 2 : ( − 6 7 ) ; з) 0 , 16 : 2 2 5 ; и) 3 1 5 : 0 , 6...

0, 8 + (- \frac{5}{6}) = \frac{8}{10} + (- \frac{5}{6}) = \frac{4}{5} + (- \frac{5}{6}) = \frac{24 - 25}{30} = - \frac{1}{30}

- \frac{1}{50} + 1, 37 = - \frac{1}{50} + \frac{137}{100} = \frac{- 2 + 137}{100} = \frac{135}{100} = 1, 35

- 7, 11 - \frac{1}{2} = - 7, 11 - 0, 5 = - 7, 61

\frac{2}{3} - 0, 8 = \frac{2}{3} - \frac{8}{10} = \frac{2}{3} - \frac{4}{5} = \frac{10 - 12}{15} = - \frac{2}{15}

- \frac{2}{7} * 1, 4 = - \frac{2}{7} * \frac{14}{10} = - \frac{2}{7} * \frac{7}{5} = - \frac{2}{5}

- 0, 24 * (- \frac{3}{16}) = \frac{24}{100} * \frac{3}{16} = \frac{3}{100} * \frac{3}{2} = \frac{9}{200}

4, 2 : (- \frac{6}{7}) = \frac{42}{10} * (- \frac{7}{6}) = \frac{21}{5} * (- \frac{7}{6}) = - \frac{7 * 7}{5 * 2} = - \frac{49}{10} = - 4, 9

0, 16 : 2 \frac{2}{5} = \frac{16}{100} : \frac{12}{5} = \frac{4}{25} * \frac{5}{12} = \frac{1}{5} * \frac{1}{3} = \frac{1}{15}

3 \frac{1}{5} : 0, 64 = \frac{16}{5} : \frac{64}{100} = \frac{16}{5} : \frac{64}{100} = \frac{16}{5} : \frac{16}{25} = \frac{16}{5} * \frac{25}{16} = 5