18/19-括号1/5-1/9等于多少
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发布时间:2022-05-12 21:37
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热心网友
时间:2023-04-24 14:30
18/19-括号1/5-1/9等于多少
=18/19-1/5+1/9
=18/19-9/45+5/45
=18/19-4/45
=(1-1/19)-4/45
=1-1/19-4/45
=1-45/855-76/855
=1-121/855
=734/855
热心网友
时间:2023-04-24 14:30
18/19-(1/5-1/9)
=18/19-4/45
=734/855