1. (5X + 4) ×2.5=3X+18 X=??
2. 5y=4y+ y/3 y=??
3. (4x+8)×5=80-6x x=??
4. 3y÷50%=4y+ 4.4 y=??
請詳細回答!!Pls !!
數學一問(重賞!!)
2008-01-28 10:57 pm
回答 (1)
2008-01-28 11:08 pm
✔ 最佳答案
1. (5x + 4) * 2.5 = 3x + 1812.5x + 10 = 3x + 18
9.5x = 8
x = 16/19
2. 5y = 4y + y/3
y = 0
3. (4x + 8) * 5 = 80 - 6x
20x + 40 = 80 - 6x
26x = 40
x = 20/13
4. 3y / 50% = 4y + 4.4
6y = 4y + 4.4
2y = 4.4
y = 2.2
收錄日期: 2021-04-13 19:43:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080128000051KK01246