(6 - 4 8/15)÷2,2 помогите пж

(6 - 4 8/15) : 2,2 = 2/31) 6 - 4 8/15 = 5 15/15 - 4 8/15 = 1 целая 7/15 = 22/152) 22/15 : 2,2 = 22/15 : 22/10 = 22/15 * 10/22 = 10/15 = 2/3Пояснения:1 целая 7/15 = (1*15+7)/15 = 22/152,2 = 2 целых 2/10 = (2*10+2)/10 = 22/1010/15 = 2/3 - сократили на 5