Solving equations
1. 7k - (9k - 16) = 14 - (19 - k)
2. 7(y -3) = 3 [1 -(5 - 3y)] + 1
3. x/2 - x/3 + 1 = 0
4. r/6 + 1 = r/4 + 7/12
唔該晒..回答既人
功課一問,,(maths)
2008-02-15 8:01 pm
回答 (1)
2008-02-15 8:19 pm
✔ 最佳答案
1. -2k+16=14-19+k21=3k
k=7
2. 7y-21=-11+9y
-10=2y
y=-5
3. 3x-2x/6=-6
x=-36
4. 2r/12+12=3r/12+7/12
12-7/12=3r-2r/12
12*5/12=3r-2r
r=5
24k/6+1/6=10/6-2k/6
20k/6=9/6
20k=9
k=9/20
參考: me
收錄日期: 2021-04-14 18:44:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080215000051KK00932