(5,4-2 1/3): 7 2/3 (2 1/3+0,25)*0,12 (7,6-4 3/4): - вопрос №4169505542137232130250127643419 от dima1028 16.03.2020 17:26

Question

Математика: (5,4-2 1/3): 7 2/3 (2 1/3+0,25)*0,12 (7,6-4 3/4): 1,9

dima1028 · Answer

(5,4 - 2 1/3) : 7 2/3 = 0,41) 5,4 - 2 1/3 = 5 2/5 - 2 1/3 = 5 6/15 - 2 5/15 = 3 1/152) 3 1/15 : 7 2/3 = 46/15 : 23/3 = 46/15 * 3/23 = 2/5 = 0,4(2 1/3 + 0,25) * 0,12 = 0,311) 2 1/3 + 0,25 = 2 1/3 + 1/4 = 2 4/12 + 3/12 = 2 7/122) 2 7/12 * 0,12 = 31/12 * 12/100 = 31/100 = 0,31 (7,6 - 4 3/4) : 1,9 =1,51) 7,6 - 4 3/4 = 7,6 - 4,75 = 2,852) 2,85 : 1,9 = 1,5...