выполните действия а) 3 3/5+6 11/15-2 1/12= б)5 9/10-1 5/12-1 11/24= в)13-(5 3/10+4 5/6)=

а) 3 3/5 + 6 11/15 = 3 9/15 + 6 11/15 =  9 20/15 = 10 5/15 =10 1/3б) 5 9/10 - 1 5/12 - 1 11/24 = 5 108/120 - 1 50/120 - 1 55/120 = 3 3/120 = = 3 1/40 в) 13 - (5 3/10 + 4 5/6) = 13 - (5 9/30 + 4 25/30) = 13 - 9 34/30 = 13 - 10 4/30 = 2 26/30 = 2 13/15