3/8+1/12+1/6 и 1/12+1/3+5/6
3/8+1/12+1/6 = 3*6+1*4+1*8/48 = 18+4+8/48=30/48 = 15/24
1/12+1/3+5/6 = 1*1+1*4+5*2/12=14/12 = 1 2/12=1 1/6
9/24+2/24+4/24=15/24=5/8 1/12+4/12+10/12=15/12=5/4=1,25