15\24+3\8 7\6+16\18 1\12+1\6 1\2+3\10

15\24+3\8 = 15/24 + 9/24= 24/24= 17\6+16\18 = 21/18 + 16/18 = 37/18 = 2   1/181\12+1\6 = 1/12 + 2/12 = 3/12 = 1/41\2+3\10 = 5/10 + 3/10 = 8/10 = 4/5

5/24  +  3/8 = 5/8  +  3/8 =   8/8 = 17/6  +  16/18 = 7/6  +  8/9 =(7 * 3+8* 2)/18 = 21 /18 +16/18 = 37/18 = 2 1/181/12  +  1/6  =1/12  + 2/12=  3/12=1/41/2  +  3/10  = 5 /10 +  3/10 =  8/10 = 4/5