(9,21+ 7 целых 3/20)×(10-6 целых 1/2 : 7

3/20 = 15/100 = 0,15               1/2 = 5/10 = 0,5----------------------------------------------------------------= (9,21 + 7,15) * (10 - 6,5) : 7 = 8,181) 9,21 + 7,15 = 16,362) 10 - 6,5 = 3,53) 16,36 * 3,5 = 57,264) 57,26 : 7 = 8,18