Solve the following quations.
23-(7y+5)/2=28
(x+4)/3-(x-2)/4=3
F.1 Maths
2013-11-07 10:59 pm
回答 (1)
2013-11-08 12:56 am
✔ 最佳答案
23-(7y+5)/2=28全式 X 2
46 - 7y -5 = 56
46 - 5 - 56 = 7y
-15 = 7y
y = -15/7 或自己化為真分數 負 2 又 7 分之 1
(x+4)/3-(x-2)/4=3
全式 X 12
4(x+4) - 3(x-2) = 36
4x + 16 -3x +6 = 36
4x - 3x = 36 - 16 - 6
x = 14
收錄日期: 2021-04-27 20:35:54
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https://hk.answers.yahoo.com/question/index?qid=20131107000051KK00096