我想問下D數學.....

🎓 學業台小學及中學教育

Sze Wing

2006-10-18 3:04 am

唔該比麻個步驟
1.(+22)-[(+13)-(-41)]
2.[(-21)+(-1)]-(-12)
3.(+92)-(-72)+(-24)

回答 (3)

2006-10-18 3:07 am

✔ 最佳答案

1.
(+22)-[(+13)-(-41)]
= 22 - 13 - 41.
= -32

2.
[(-21)+(-1)]-(-12)
= -21 - 1 +12
-10

3.
(+92)-(-72)+(-24)
= 92 + 72 - 24
= 140

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leung

2006-10-18 3:15 am

1.

(+22)-[(+13)-(-41)]

= 22 - 13 - 41.

= -32

2.

[(-21)+(-1)]-(-12)

= -21 - 1 +12

-10

3.

(+92)-(-72)+(-24)

= 92 + 72 - 24

= 140

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EvA

2006-10-18 3:09 am

即可任意+-1個先

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