Решить дробь 6.3/14•4.5/9-6.3/14•1.5/9+2.11/14•3 - вопрос №399941863144596314159211143 от gr1mez 29.04.2020 17:48

Question

Математика: Решить дробь 6.3/14•4.5/9-6.3/14•1.5/9+2.11/14•3

gr1mez · Answer

1) 6 3/14 × 4 5/9 = 87/14 × 41/9 = 1189/42 = 28 13/42
2) 6 3/14 × 1 5/9 = 87/14 × 14/9 = 29/3 = 9 2/3
3) 2 11/14 × 3 = 39/14 × 3 = 117/14 = 8 5/14
4) 28 13/42 - 9 2/3 = 1189/42 - 29/3 =1189/42 - 406/42 = 783/42 = 261/14 = 18 9/14
5)18 9/14 + 8 5/14 = 261/14 + 117/14 = 378/14 = 27
ответ 27