(6 1/2 - 4 1/4) : 2 1/2 = 9/101) 6 1/2 - 4 1/4 = 6 2/4 - 4 1/4 = 2 1/42) 2 1/4 : 2 1/2 = 9/4 : 5/2 = 9/4 * 2/5 = 9/10(4 8/15 - 1 1/3) * 1 7/8 = 61) 4 8/15 - 1 1/3 = 4 8/15 - 1 5/15 = 3 3/15 = 3 1/52) 3 1/5 * 1 7/8 = 16/5 * 15/8 = 6(2 2/3 + 1 5/6) : 1 1/2 = 31) 2 2/3 + 1 5/6 = 2 4/6 + 1 5/6 = 3 9/6 = 4 3/6 = 4 1/22) 4 1/2 : 1 1/2 = 9/2 : 3/2 = 9/2 * 2/3 = 3(3 1/6 - 2 7/15) : 1 2/5 = 1/21) 3 1/6 - 2 7/15 = 3 5/30 - 2 14/30 = 2 35/30 - 2 14/30 = 21/30 = 7/102) 7/10 : 1 2/5 = 7/10 : 7/5 = 7/10 * 5/7 = 1/2(1 2/3 + 2 4/9) : (4 26/27 - 2 2/9) = 1 1/21) 1 2/3 + 2 4/9 = 1 6/9 + 2 4/9 = 3 10/9 = 4 1/92) 4 26/27 - 2 2/9 = 4 26/27 - 2 6/27 = 2 20/273) 4 1/9 : 2 20/27 = 37/9 : 74/27 = 37/9 * 27/74 = 3/2 = 1 1/2(6 1/24 - 2/3) : (3 1/2 + 1 7/8) = 11) 6 1/24 - 2/3 = 6 1/24 - 16/24 = 5 25/24 - 16/24 = 5 9/24 = 5 3/82) 3 1/2 + 1 7/8 = 3 4/8 + 1 7/8 = 4 11/8 = 5 3/83) 5 3/8 : 5 3/8 = 43/8 : 43/8 = 43/8 * 8/43= 1