25.4.3+3x=16x-21.7 x=?
26.4x+0.78=-1.62 x=?
27.-6+4x=4-x x=?
28.4y-7=-y+3 y=?
列式計算,,,急.........急..........
2007-08-30 5:54 am
回答 (1)
2007-08-30 6:01 am
✔ 最佳答案
25.4.3+3x=16x-21.7
4.3 + 21.7 = 16x - 3x
26 = 13x
x = 2
26.
4x+0.78=-1.62
4x = -2.4
x = -0.6
27.
-6+4x=4-x
5x = 10
x= 2
28.
4y-7=-y+3
5y = 10
y =2
參考: 自己
收錄日期: 2021-04-23 20:24:40
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https://hk.answers.yahoo.com/question/index?qid=20070829000051KK05778