1) (9/10-1/3+3/4-1/15)÷(1/2-1/6)÷5/12 = 9
1. 9/10-1/3+3/4-1/15 = 5/4
2. 1/2 - 1/6 = 1/3
3. 5/4 * 1/3 * 12/5
4. 1/4 * 3 * 12 = 3*3 = 9
2) (5/7‐2/5+11/14)÷(2/3+4/5-7/15)÷2 1/5 = 1/2
1. 5/7‐2/5+11/14 = 11/10
2. 2/3+4/5-7/15 = 1
3. 2 1/5 = 11/5
4. 11/10 : 1 : 11/5 = 11/10 * 5/11 = 1/2
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Answers & Comments
1) (9/10-1/3+3/4-1/15)÷(1/2-1/6)÷5/12 = 9
1. 9/10-1/3+3/4-1/15 = 5/4
2. 1/2 - 1/6 = 1/3
3. 5/4 * 1/3 * 12/5
4. 1/4 * 3 * 12 = 3*3 = 9
2) (5/7‐2/5+11/14)÷(2/3+4/5-7/15)÷2 1/5 = 1/2
1. 5/7‐2/5+11/14 = 11/10
2. 2/3+4/5-7/15 = 1
3. 2 1/5 = 11/5
4. 11/10 : 1 : 11/5 = 11/10 * 5/11 = 1/2
11/35+11/14 = 11/10
2/3+4/5 = 22/15
22/15 - 7/15 = 1
11/10 : 1 = 11/10
2 1/5 = 11/5
11/10 : 11/5 = 11/10 * 5/11 = 1/2