d老師有冇事呀?一次過比咁多數!
9x - 45 X 20 = 250
(係唔係有負數?)
好難啊 ! 唔識呀 !
2006-12-22 10:48 pm
回答 (6)
2006-12-23 12:07 am
✔ 最佳答案
9x - 45 X 20 = 2509x-900=250
9x=250+900
9x=1150
x=127.78 (corr. to 2 dec.place)
This question don't contain any negative number
because - 45 X 20 will be change to + 45X20
2006-12-22 11:10 pm
9x-45*20=250
9x-900=250
9x-900+900=250+900
9x/9=1150/9
x=127又9分之7
2006-12-22 15:11:43 補充：
係冇負數.................
9x-900=250
9x-900+900=250+900
9x/9=1150/9
x=127又9分之7
2006-12-22 15:11:43 補充：
係冇負數.................
2006-12-22 11:06 pm
9x - 45 X 20 = 250
9x-900=250
9x=250+900
9x=1150
x=127.78
9x-900=250
9x=250+900
9x=1150
x=127.78
2006-12-22 11:02 pm
冇負數
9x-900=150
9x=150+900
9x=1050
x=1050/9
x=116.67 or 116又3份之2
2006-12-22 15:07:29 補充：
Sorry9x-900=2509x=250 9009x=1150x=1150/9x=116.78 or 127又9份之7
9x-900=150
9x=150+900
9x=1050
x=1050/9
x=116.67 or 116又3份之2
2006-12-22 15:07:29 補充：
Sorry9x-900=2509x=250 9009x=1150x=1150/9x=116.78 or 127又9份之7
參考: me
2006-12-22 10:55 pm
9x-45X20=250
9x-900=250
9x=250+900
9x=1150
x=127.7777777777777.......................
I THINK IS LIKE THIS
9x-900=250
9x=250+900
9x=1150
x=127.7777777777777.......................
I THINK IS LIKE THIS
收錄日期: 2021-04-12 22:17:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061222000051KK02008