(5,4-2 1/3)÷7 2/3 ПОЖАЛУЙСТА ПОМОГИТЕ

(5,4 - 2 1/3) : 7 2/3 = 0,41) 5,4 - 2 1/3 = 54/10  - 7/3 = 27/5 - 7/3 = (3*27 - 5*7)/15 = (81-35)/15 = 46/152) 46/15 : 7 2/3 = 46/15 : 23/3 = 46/15 * 3/23 = 2/5 = 0,4