2. [(-15)+(-3)(+5)]÷[(-4)(-3)]
3. [(+3)-(-4)(-5)]÷[(-4)(-3)]
4. [(-2)(+3)-(-2+3)]÷[(+2)(-3)]
5. [(-13)-(+2)]÷[(+2)-(-1)]
6. [(+100)÷(-5)]÷[(-2)+(+1)]
2 2
7. -3x(-4)-(-2)
2 2
8. (-6)+(-1)x(-5)
更新1:
2 2 7. -3x(-4)-(-2)
更新2:
是有8題啊，不是1，2題啊!!!
幫我計幾條數(要步驟)
2007-10-01 7:46 pm
1. [(+8)-(-4)(+3)]÷[(+2)(-2)]
2. [(-15)+(-3)(+5)]÷[(-4)(-3)]
3. [(+3)-(-4)(-5)]÷[(-4)(-3)]
4. [(-2)(+3)-(-2+3)]÷[(+2)(-3)]
5. [(-13)-(+2)]÷[(+2)-(-1)]
6. [(+100)÷(-5)]÷[(-2)+(+1)]
2 2
7. -3x(-4)-(-2)
2 2
8. (-6)+(-1)x(-5)
2. [(-15)+(-3)(+5)]÷[(-4)(-3)]
3. [(+3)-(-4)(-5)]÷[(-4)(-3)]
4. [(-2)(+3)-(-2+3)]÷[(+2)(-3)]
5. [(-13)-(+2)]÷[(+2)-(-1)]
6. [(+100)÷(-5)]÷[(-2)+(+1)]
2 2
7. -3x(-4)-(-2)
2 2
8. (-6)+(-1)x(-5)
回答 (3)
2007-10-01 7:56 pm
✔ 最佳答案
1.[(+8)-(-4)(+3)]÷[(+2)(-2)]=[(+20)]÷[(-4)]
=(+20)÷(-4)
= -5
2. [(-15)+(-3)(+5)]÷[(-4)(-3)]
=[(-30)]÷[(12)]
= -2.5
2007-10-03 3:02 am
好差!!
2007-10-01 8:05 pm
1.[(+8)-(-4)(+3)]÷[(+2)(-2)]
=[(+8)-(-12)]÷[-4]
=[+8+12]÷[+4]
=(+20)÷[+4]
=+5
=[(+8)-(-12)]÷[-4]
=[+8+12]÷[+4]
=(+20)÷[+4]
=+5
收錄日期: 2021-04-16 23:00:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071001000051KK01536