請列明算式
註:1/9=9分之1...
1/9(h+9)=5/6-1/2(h+7) h=?
2008-10-26 8:40 pm
回答 (4)
2008-10-26 9:23 pm
✔ 最佳答案
1/9(h+9)=5/6-1/2(h+7)2 (h+9)/18=5(3)/18-9(h+7)/18
2h+18=15-9h-63
2h+9h=15-18-63
11h=-66
h=-6
參考: Me
2008-10-30 9:02 pm
2 (h+9)/18=5(3)/18-9(h+7)/18
即系 通分母
兩邊乘18，之後可互消
即系 通分母
兩邊乘18，之後可互消
2008-10-26 9:35 pm
1/9(h+9)=5/6-1/2(h+7)
(1/9)(h+9)(9)=[5/6-1/2(h+7)](9)
h + 9 = 45/6 – 63/2 – 9h/2
h + 9 +24 – 9 + 9h/2= – 24 – 9h/2 + 24 – 9 + 9h/2
(11h/2)(2) =(15)(2)
(11h)(1/11)=30(1/11)
h=30/11
h=2/8/11 ( 即2又11分之8 )
(1/9)(h+9)(9)=[5/6-1/2(h+7)](9)
h + 9 = 45/6 – 63/2 – 9h/2
h + 9 +24 – 9 + 9h/2= – 24 – 9h/2 + 24 – 9 + 9h/2
(11h/2)(2) =(15)(2)
(11h)(1/11)=30(1/11)
h=30/11
h=2/8/11 ( 即2又11分之8 )
參考: : - )
2008-10-26 9:29 pm
2 (h+9)/18=5(3)/18-9(h+7)/18
即係點??
即係點??
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https://hk.answers.yahoo.com/question/index?qid=20081026000051KK00848