7y+6=12y+2.4 y=?

7y+6=12y+2.4
7y-12y=2.4-6
-5y=-3.6
y=0.72

7y+6 =12y+2.4
6-2.4 =12y-7y
4.8 =5y
y =0.72


so y=0.72

7y+6=12y+2.4
7y-12y=2.4-6
-5y=-3.6
y=0.72

7y+6=12y+2.4
7y+6-7y=12y+2.4-7y
6-2.4=5y+2.4-2.4
3.6=5y
y=0.72

2007-04-20 19:51:24 補充：
雖然答案簡潔有力，但.........

The value of y.
7y+6=12y+2.4
7y+6-2.4=12y
7y+3.6=12y
3.6=12y-7y
3.6=5y
3.6/5=y
0.72=y
i.e. y=0.72

Therefore, y is equal to 0.72.

7y+6=12y+4
6-4=12y-7y
2=5y
2
--- =y
5

7y+6=12y+2.4
6-2.4=12y-7y
3.6=5y
5y=3.6
y=0.72

7y+6=12y+2.4
6-2.4=12y-7y
3.6=5y
0.72=y
y=0.72

Y=0.72//. XP

　7ｙ+ 6 = 12ｙ+ 2.4
6 - 2.4 = 12ｙ- 7ｙ
3.6 = 5ｙ
ｙ= 0.72

我計得係味令D -.-

7y+6=12y+2.4 y=?
0.72

7y+6=12y+2.4
7y-7y6=12y-7y+2.4
6=5y+2.4
6-2.4=5y+2.4-2.4
3.6=5y
y=0.72

5y = 6 - 2.4
y = 0.72