(8 7/12-2 17/36)*2,7-4 1/3: 0,65 решить - вопрос №587942787122173627413065 от mminovskaya777 22.07.2020 17:58

Question

Математика: (8 7/12-2 17/36)*2,7-4 1/3: 0,65 решить

mminovskaya777 · Answer

(8 7/12 - 2 17/36) * 2,7 - 4 1/3 : 0,65 = 9 5/6

1) 8 7/12 - 2 17/36 = 8 21/36 - 2 17/36 = 6 4/36 = 6 1/9
2) 6 1/9 * 2,7 = 55/9 * 27/10 = (11*3)/(1*2) = 33/2 = 16 1/2
3) 4 1/3 : 0,65 = 13/3 : 65/100 = 13/3 * 100/65 = (1*100)/(3*5) = 100/15 = 6 10/15 = 6 2/3
4) 16 1/2 - 6 2/3 = 16 3/6 - 6 4/6 = 15 9/6 - 6 4/6 = 9 5/6