急!!!有數學唔識做？？

(1)
(e+2)/3=10
e+2=10*3
e+2-2=30-2
e=28

(2)
2y+3=18y
3+2y-2y=18y-2y
16y=3
y=3/16

(3)
4x+12=6x-10
4x+12+10=6x-10+10
22+4x-4x=6x-4x
2x=22
x=11

(4)
24/k=4
24=4k
k=6

(1)
(e+2)/3=10
e+2=10*3
e+2-2=30-2
e=28

(2)
2y+3=18y
3+2y-2y=18y-2y
16y=3
y=3/16

(3)
4x+12=6x-10
4x+12+10=6x-10+10
22+4x-4x=6x-4x
2x=22
x=11

(4)
24/k=4
24=4k
k=6

1.e/3+2=10
e/3=10-2
e/3=8
e=8 x 3
e=24

2.2y+3=18y
3=18y-2y
3=16y
3/16=y
y=3/16

3. 4x+12=2(3x-5)
4x+12=6x-10
4x+12+10=6x
4x+22=6x
22=2x
11=x
x=11

4. 24/k =4
24=4 x k
24=4k
k=6

1. e+2 / 3 = 10
--> e+2 = 3 x 10
--> e = 30 - 2
--> e = 28

2. 2y + 3 = 18y
--> 3 = 18y - 2y
--> 3 = 16y
--> y = 16/3
--> y = 5 1/3

3. 4x + 12 = 2 (3x - 5)
--> 4x + 12 = 2 (3x) - 2 (5)
--> 4x + 12 = 6x - 10
--> 12 + 10 = 6x - 4x
--> 22 = 2x
--> x = 11

4. 24/k = 4
--> 24 = 4 x k
--> k = 24/4
--> k = 6

2007-08-26 02:25:46 補充：
2. 2y 3 = 18y-- 3 = 18y - 2y-- 3 = 16y-- y = 3/16一時手快, 出錯O左, 唔好意思~

1.3分之e+2=10
(e/3)+2=10
(e/3)=10-2
(e/3)=8
e=8*3
e=24....(答案)

ps:* =乘, / = 除

2.2y+3=18y
2y+3=18y
3=18y-2y
3=16y
16y=3
y=3/16.....(答案)


3.4x+12=2(3x-5)
4x+12=2(3x-5)
4x+12=6x-10
12+10=6x-4x
22=2x
2x=22
x=11.......(答案)

4.k分之24=4
24/k =4
24=4k
4k=24
k=24/4
k=6......(答案)

2007-08-26 02:31:31 補充：
有問題!!!!!究竟係(3分之e) 2,定3分之(e 2)????

2007-08-26 02:32:06 補充：
有問題!!!!!究竟係(3分之e)+ 2,定3分之(e+ 2)????