Как сделать скажите !
(5 \frac{3}{7} - 3 \frac{2}{5}) + (3 - 1 \frac{17}{35}) - (4 - \frac{12}{15} - 3 \frac{19}{105})
(7 \frac{7}{9} - 5 \frac{1}{3}) - (2 - 1 \frac{5}{6}) + (9 \frac{19}{36} - 3 \frac{11}{12})

zhannar333ta zhannar333ta    3   01.11.2019 18:49    0

Ответы
kuznetsovakristina kuznetsovakristina  10.10.2020 10:56

(5 3/7 - 3 2/5) + (3 - 1 17/35) - (4 - 12/15 - 3 19/105) = 3 целых 11/21.

1) 5 3/7 - 3 2/5 = 5 15/35 - 3 14/35 = 2 1/35

2) 3 - 1 17/35 = 2 35/35 - 1 17/35 = 1 18/35

3) 4 - 12/15 = 3 15/15 - 12/15 = 3 3/15 = 3 1/5

4) 3 1/5 - 3 19/105 = 3 21/105 - 3 19/105 = 2/105

5) 2 1/35 + 1 18/35 = 3 19/35

6) 3 19/35 - 2/105 = 3 57/105 - 2/105 = 3 55/105 = 3 11/21

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(7 7/9 - 5 1/3) - (2 - 1 5/6) + (9 19/36 - 3 11/12) = 7 целых 8/9.

1) 7 7/9 - 5 1/3 = 7 7/9 - 5 3/9 = 2 4/9

2) 2 - 1 5/6 = 1 6/6 - 1 5/6 = 1/6

3) 9 19/36 - 3 11/12 = 9 19/36 - 3 33/36 = 8 55/36 - 3 33/36 = 5 22/36 = 5 11/18

4) 2 4/9 - 1/6 = 2 8/18 - 3/18 = 2 5/18

5) 2 5/18 + 5 11/18 = 7 16/18 = 7 8/9

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