麻烦大家帮我想出10道异分母分数加减法,急需,谢谢
2个回答
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1: 7/8 + 1/9
2: 5/2 - 4/5
3: 3/4 - 1/3
4: 5/9 + 3/4
5: 1/2 + 2/3
6: 4/5 + 1/6
7: 5/6 – 4/7
8: 4/7 – 10/21
9: 5/9 – 2/7
10:7/15 + 2/3
2: 5/2 - 4/5
3: 3/4 - 1/3
4: 5/9 + 3/4
5: 1/2 + 2/3
6: 4/5 + 1/6
7: 5/6 – 4/7
8: 4/7 – 10/21
9: 5/9 – 2/7
10:7/15 + 2/3
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展开全部
1: 7/8 + 1/9
2: 5/2 - 4/5
3: 3/4 - 1/3
4: 5/9 + 3/4
5: 1/2 + 2/3
6: 4/5 + 1/6
7: 5/6 – 4/7
8: 4/7 – 10/21
9: 5/9 – 2/7
10:7/15 + 2/3
2: 5/2 - 4/5
3: 3/4 - 1/3
4: 5/9 + 3/4
5: 1/2 + 2/3
6: 4/5 + 1/6
7: 5/6 – 4/7
8: 4/7 – 10/21
9: 5/9 – 2/7
10:7/15 + 2/3
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