1.(-8)除(-2)+(+4)x(-6)
2.(-7)x[8-(-7)] 除 (+4-18)x(-5)
e 2條數點計 (要列埋算式) 15點!!!!!!!!
2010-09-18 9:11 pm
回答 (4)
2010-09-18 9:45 pm
✔ 最佳答案
1. (-8)/(-2)+(+4)x(-6)=4+(-24)
=4-24
=-20
2. (-7)x[8-(-7)] / (4-18)x(-5)
=(-7)(8+7) / (-14)(-5)
=(-7)(15) /70
=-105/70
=-1.5
參考: 岩岩見到樓上計錯....so岩岩計...
2010-09-18 10:10 pm
1.(-8)/(-2)+(-4)X(-6)
=8/2+4x6
=4+24
=28
2.(-7)x[8-(-7)]/(+4-18)x(-5)
=(-7)x(8+7)/(-14)x(-5)
=(-7)x15/(-14)x(-5)
=(-105)/(-14)x(-5)
=7.5x(-5)
=(-37.5)
=8/2+4x6
=4+24
=28
2.(-7)x[8-(-7)]/(+4-18)x(-5)
=(-7)x(8+7)/(-14)x(-5)
=(-7)x15/(-14)x(-5)
=(-105)/(-14)x(-5)
=7.5x(-5)
=(-37.5)
2010-09-18 9:54 pm
1.(-8)除(-2)+(+4)x(-6)
2.(-7)x[8-(-7)] 除 (+4-18)x(-5)
1.(-8)÷(-2)+(+4)x(-6)
=(+4)+(-24)
=-20
==
2.(-7)x[8-(-7)] ÷ (+4-18)x(-5)
=(-7)x(-6)÷(-16)x(-5)
=(-42)÷(-16)x(-5)
=(-2.625)x(-5)
=-525
===
應該arm ge~~~^v^
2.(-7)x[8-(-7)] 除 (+4-18)x(-5)
1.(-8)÷(-2)+(+4)x(-6)
=(+4)+(-24)
=-20
==
2.(-7)x[8-(-7)] ÷ (+4-18)x(-5)
=(-7)x(-6)÷(-16)x(-5)
=(-42)÷(-16)x(-5)
=(-2.625)x(-5)
=-525
===
應該arm ge~~~^v^
2010-09-18 9:19 pm
1. (-8)/(-2)+(+4)x(-6)
=4+(-24)
=4-24
=20
2. (-7)x[8-(-7)] / (4-18)x(-5)
=(-7)(8+7) / (-14)(-5)
=(-7)(15) /70
=-105/70
=-3/2
=4+(-24)
=4-24
=20
2. (-7)x[8-(-7)] / (4-18)x(-5)
=(-7)(8+7) / (-14)(-5)
=(-7)(15) /70
=-105/70
=-3/2
參考: me
收錄日期: 2021-04-27 12:44:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100918000051KK00581