6 1/4 * 8 - 3 2/3 * 5 1/2 + 2 2/5 * 4 7/12 = 18 5/6
1) 6 1/4 * 8 = 25/4 * 8 = 50
2) 3 2/3 * 5 1/2 = 11/3 * 11/2 = 121/6 = 20 1/6
3) 2 2/5 * 4 7/12 = 12/5 * 55/12 = 11
4) 50 - 20 1/6 = 49 6/6 - 20 1/6 = 29 5/6
5) 29 5/6 - 11 = 18 5/6
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2 1/2 * 48 - 3 2/3 : 1/18 + 5 5/12 : 7/36 = 81 6/7
1) 2 1/2 * 48 = 5/2 * 48 = 120
2) 3 2/3 : 1/18 = 11/3 * 18/1 = 66
3) 5 5/12 : 7/36 = 65/12 * 36/7 = 195/7 = 27 6/7
4) 120 - 66 = 54
5) 54 + 27 6/7 = 81 6/7
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13 1/2 : 1 1/3 + 16 1/2 * 1 5/11 + 19 1/4 : 4/25 = 154 7/16
1) 13 1/2 : 1 1/3 = 27/2 : 4/3 = 27/2 * 3/4 = 81/8 = 10 1/8
2) 16 1/2 * 1 5/11 = 33/2 * 16/11 = 24
3) 19 1/4 : 4/25 = 77/4 * 25/4 = 1925/16 = 120 5/16
4) 10 1/8 + 24 = 34 1/8
5) 34 1/8 + 120 5/16 = 34 2/16 + 120 5/16 = 154 7/16