各位數學高手，請幫忙呀!!!!(方程式幾題)

注意:( 2分之1 = 1/2 )
1)Y - (3分之2)=4Y - 3
- 1.5 + 3 = 4Y - Y
1.5 = 3Y
Y = 0.5

2)X=(3分之1X) + 5
X - 5 = X/3
3( X - 5 ) = X
3X - 15 = X
2X = 15
X = 7.5

3)2X + 3=(2分之1X) + 6
2X + 3 - 6 = X/2
2( 2X - 3 ) = X
4X - 6 = X
3X = 6
X = 2

4)2X - 3=(4分之3X) + 2
2X - 3 - 2 = 3X/4
4( 2X - 5 ) = 3X
8X - 20 = 3X
5X = 20
X = 4

5)(5分之Y)- 2=(7分之Y)- 1
Y/5 - Y/7 = - 1 + 2
( 7Y - 5Y )/35 = 1
2Y = 35
Y = 17.5

6)3+X=3X- 1
X - 3X = - 1 - 3
- 2X = - 4
X = 2

7)5Y- 2分之1=3Y
5Y - 3Y = 1/2
2Y = 1/2
Y = 1/4
Y = 0.25

8)4分之3T=7分之(4T + 10)-----下次記得加( )
21T/4 = 4T + 10
21T = 16T + 40
5T = 40
T = 8

9)2 + 4X=23 - 3X
4X + 3X = 23 - 2
7X = 21
X = 3

10)10 - 2X= 6X + 2
- 2X - 6X = 2 - 10
- 8X = - 8
X = 1

Hope can help you~

2009-08-30 19:09:13 補充：
下次要自己做喔~
不然考試時會不懂~

加油~

唔好依賴人哋同你做功課啊!!!!!!

You are too bad!