Here is a graph that shows which animals are kept by students from 11 to 12 years old. 28 students participated in the survey. it turned out that the vast…

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Спросил: 19.09.20202020-09-19T03:23:43+03:00 2020-09-19T03:23:43+03:00Предмет: Математика

Вопрос. 5 1/2 — (1 3/14+11/21) + (4 5/12-2) Сколько будет? И решение.

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good-idea · Answer 1 · 2020-09-19T15:15:34+03:00

5 1/2 — (1 3/14 + 11/21) + (4 5/12 — 2) = 6 5/28

1) 1 3/14 + 11/21 = 1 9/42 + 22/42 = 1 31/42

2) 4 5/12 — 2 = 2 5/12

3) 5 1/2 — 1 31/42 = 5 21/42 — 1 31/42 = 4 63/42 — 1 31/42 = 3 32/42 = 3 16/21

4) 3 16/21 + 2 5/12 = 3 64/84 + 2 35/84 = 5 99/84 = 6 15/84 = 6 5/28

Ответ: 6 целых 5/28.