71/7+61/6+51/5+41/4+31/3怎么计算
答案:1 悬赏:30
解决时间 2021-01-07 10:51
- 提问者网友:一抹荒凉废墟
- 2021-01-07 05:01
71/7+61/6+51/5+41/4+31/3怎么计算
最佳答案
- 二级知识专家网友:一袍清酒付
- 2021-01-07 05:38
71/7+61/6+51/5+41/4+31/3
=10+1/7+10+1/6+10+1/5+10+1/4+10+1/3
=50+1/7+1/6+1/5+1/4+1/3
=50+60/420+70/420+84/420+105/420+140/420
=50+459/420
=51+39/420
=51+13/140
=10+1/7+10+1/6+10+1/5+10+1/4+10+1/3
=50+1/7+1/6+1/5+1/4+1/3
=50+60/420+70/420+84/420+105/420+140/420
=50+459/420
=51+39/420
=51+13/140
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