✔ 最佳答案
解方程時,有以下步驟:
先將有x的放在一邊,冇的放在另一邊
再將x的係數(coeff)調到另一邊,便可找到x了
1. 6x - 1/4 = 2 - 1/3
[先將有x的放在一邊,冇的放在另一邊:]
6x = 2 - 1/3 + 1/4
6x = 23/12
[再將x的係數(coeff)調到另一邊:]
x = (23/12) /6
x = 23/72 [ans]
2. 5(x+1)/3 = 5x + 10/8
[先將有x的放在一邊,冇的放在另一邊:]
5(x+1)/3 = 5x + 10/8
5x/3 + 1/3 = 5x + 10/8
5x/3 -5x = 10/8 -1/3
4/3(5x) = 20/24
[再將x的係數(coeff)調到另一邊:]
5x = (20/24) / (4/3)
x = 1/8 [ans]
之後兩條自己試吓做啦~
都係咁樣做就計到。
3. x = 3
4. x = 6
2008-05-22 00:04:29 補充:
樓上位人兄Q2,4個answer錯了!
第2條佢全式乘24,但係右面個5x 乘 24 =120x,而唔係70x!
第4條佢將個4同3分別乘入去,但係左面個x乘4 = 4x,而唔係-4x!
ts012393562000 請留意!