(4 целых 5/6 - 2,5)*12-27*5/9 (2целых 7/12+1,75): - вопрос №41522264562512275927121751325334 от skillet12oz 23.06.2022 10:36

Question

Математика: (4 целых 5/6 - 2,5)*12-27*5/9 (2целых 7/12+1,75): 13+2,5: 3целых 3/4

skillet12oz · Answer

1. (4ц 5/6 - 2,5) * 12 - 27 * 5/9 = 16,6

1) (4ц5/6 - 2,5) = 29/6 - 11/5 = 79/30
2) 79/30* 12 = 158/5 = 31,6
3) 27 * 5/9 = 15
4) 31,6 -15 =16,6

2. (2ц7/12 + 1,75) :13 + 2,5: 3ц3/4 = 1

1) (2ц7/12 = 1, 75) = 31/12 + 7/4 = 13/3
2) 13/3 : 13 = 1/3
3) 2,5 : 3ц3/4 = 5/2 : 15/4 = 2/3
4)1/3 + 2/3 = 1