我想問一題數的步驟...
0.75x/(4-x+0.75)=1.5
請寫出步驟..
答案是3.2..
數學方式...好易..
2008-02-17 1:11 am
回答 (5)
2008-02-17 1:19 am
✔ 最佳答案
0.75x/(4-x+0.75)=1.5
0.75x=1.5(4-x+0.75)
0.75x=6-1.5x+1.125
0.75x+1.5x=6+1.125
2.25x=7.125
x=3.167
x=3.2(1位小數)
I hope I can help you
2008-02-16 17:20:39 補充：
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參考: 我答嘅時候係冇人答
2008-02-17 7:57 pm
0.75x/(4-x+0.75)=1.5
0.75x = 1.5(4-x+0.75)
0.75x = 1.5(4.75-x)
0.75x = 7.125-1.5x
0.75x+1.5x = 7.125
2.25x = 7.125
x = 7.125/2.25
x = 3.166666667
x ~ 3.2
0.75x = 1.5(4-x+0.75)
0.75x = 1.5(4.75-x)
0.75x = 7.125-1.5x
0.75x+1.5x = 7.125
2.25x = 7.125
x = 7.125/2.25
x = 3.166666667
x ~ 3.2
2008-02-17 1:40 am
0.75x/(4-x+0.75)=1.5
0.75x= 1.5(4-x+0.75)
0.75x= 6-1.5x+1.125
0.75x= -1.5x+7.125
0.75x+1.5x= 7.125
2.25x= 7.125
x= 7.125/2.25
x=3and 1/6
x= 3.1666...
x=3.2(corrected to the nearest tenth)
0.75x= 1.5(4-x+0.75)
0.75x= 6-1.5x+1.125
0.75x= -1.5x+7.125
0.75x+1.5x= 7.125
2.25x= 7.125
x= 7.125/2.25
x=3and 1/6
x= 3.1666...
x=3.2(corrected to the nearest tenth)
參考: me
2008-02-17 1:19 am
0.75x/(4-x+0.75)=1.5
0.75X=6-1.5x+1.125
2.25x=7.125
x=3.166666
0.75X=6-1.5x+1.125
2.25x=7.125
x=3.166666
2008-02-17 1:18 am
0.75x/(4-x+0.75)=1.5
0.75x = 1.5(4-x+0.75)
0.75x = 1.5(4.75-x)
0.75x = 7.125-1.5x
0.75x+1.5x = 7.125
2.25x = 7.125
x = 7.125/2.25
x = 3.166666667
x ~ 3.2
0.75x = 1.5(4-x+0.75)
0.75x = 1.5(4.75-x)
0.75x = 7.125-1.5x
0.75x+1.5x = 7.125
2.25x = 7.125
x = 7.125/2.25
x = 3.166666667
x ~ 3.2
收錄日期: 2021-04-19 00:30:16
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https://hk.answers.yahoo.com/question/index?qid=20080216000051KK02983