can anybody show me step by step solving this equation?
回答 (2)
2007-10-07 8:55 pm
✔ 最佳答案
方法一：通分母1/9(h+9) = 5/6﹣1/2(h+7)
h/9 + 1 = 5/6﹣h/2﹣7/2
2h/18 + 18/18 = 15/18﹣9h/18﹣63/18
2h/18 + 9h/18 = 15/18﹣63/18﹣18/18
11h = 15﹣63﹣18
11h = -66
h = -6
方法二：全式乘18
1/9(h+9) = 5/6﹣1/2(h+7)
2(h+9)=15﹣9(h+7)
2h+18=15﹣9h﹣63
11h=-66
h=-6
2007-10-07 9:08 pm
1/9(h+9)=5/6-1/2(h+7)
h/9+1=5/6-h/2-7/2
h/9+h/2=5/6-7/2-1
2h/18+9h/18=10/12-42/12-12/12
11h/18=44/12
11h=44*18/12
h=4*18/12
h=4*3/2
h=2*3
h=6
2007-10-07 13:10:32 補充：
sorry the answer is wrongthe correct answer is -6because2h/18+9h/18=10/12-42/12-12/1211h/18=-44/1211h=-44*18/12h=-4*18/12h=-4*3/2h=-2*3h=-6
h/9+1=5/6-h/2-7/2
h/9+h/2=5/6-7/2-1
2h/18+9h/18=10/12-42/12-12/12
11h/18=44/12
11h=44*18/12
h=4*18/12
h=4*3/2
h=2*3
h=6
2007-10-07 13:10:32 補充：
sorry the answer is wrongthe correct answer is -6because2h/18+9h/18=10/12-42/12-12/1211h/18=-44/1211h=-44*18/12h=-4*18/12h=-4*3/2h=-2*3h=-6
收錄日期: 2021-04-13 19:58:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071007000051KK01878