有1絛數學唔識做

2007-01-02 6:19 am
1
----- (y-5) =2分之3 (y-5是在分線的中間)
4
更新1:

x+2 -----=7 3 x ---+2=7 3

回答 (1)

2007-01-02 6:25 am
✔ 最佳答案
Q1
1 / 4 (y - 5) = 3 / 2
y - 5 = (3 / 2) * 4
y - 5 = 6
y = 11

Q2
(x + 2) / 3 = 7
x + 2 = 21
x = 19

Q3
(x / 3) + 2 = 7
x / 3 = 5
x = 15


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