7分之5乘以3分之2+15分之14除以9分之1 - 知识问答

7分之5乘以3分之2+15分之14除以9分之1

2个回答

5/7×2/3 + 14/15÷1/9
= 5/7×2/3 + 14/15×9
= 10/21 + 42/5
= 50/105 + 884/105
= 934/105
7/5×3/2 + 14/15÷1/9
= 7/5×3/2 + 14/15×9
= 21/10 + 42/5
= 21/10 + 84/10
= 105/10
= 21/2

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