Maths

👨🏻‍🏫 學術台數學

用戶136378

2008-09-21 1:49 am

1.
(-3分1)+(+4分3)-(-6分5)=? 要有步驟!
2.
(-24分1)÷(+51分-14)x(-34分+19)=

回答 (2)

佩文

2008-09-21 2:06 am

✔ 最佳答案

(-3分1)+(+4分3)-(-6分5)
= -1/3 + 3/4 + 5/6
= -4/12 + 9/12 + 10/12
= -4+9+10/12
=15/12 (如果佢要求假分數就呢個答案..
唔係你可以寫1又4份1)

下一題我唔係好識...

參考: myself

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[匿名]

2008-09-21 2:25 am

2.
(-1/24)÷(-14/51)x(-19/34)
=(-1/24)x(-51/14)x(-19/34)
=(-1/24)x(-3/14)x(-19/2)
=(-1/8)x(-1/14)x(-19/2)
=(-1/8)x(-1/7)x(-19)
= -19/56

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