1. 2x+5x=28
2. p-12=4
3. 5p=4p+9
4. a/3=12
5. 0.6a=10
6. 2(m-1)=5
7. m+3/4=3
數學的問題
2007-07-21 6:51 am
回答 (7)
2007-07-21 6:58 am
✔ 最佳答案
1. 7x = 28x = 28/7
x = 4
2. p = 4 + 12
p = 16
3. 5p - 4p = 9
p = 9
4. a = 12x3
a = 36
5. 0.6a = 10
a = 10/0.6
a = 16.67......或50/3
6. m - 1 = 5/2
m = 2.5 + 1
m = 3.5
7. m = 3 - 3/4
m = 12/4 - 3/4
m = 9/4 or 2.25
個腦好勁冇用...不過除左唔小心之外都唔會計錯既...
2007-07-20 22:58:59 補充：
好耐...唔係勁－ －依家就唔小心嚕~呵
2007-07-26 3:33 am
1. 2x+5x=28
x=4
2. p-12=4
p=16
3. 5p=4p+9
p=1
4. a/3=12
a=36
5. 0.6a=10
16.67(取自小數點後一個位)
6. 2(m-1)=5
m=3
7. m+3/4=3
m=9/4 or2.25
x=4
2. p-12=4
p=16
3. 5p=4p+9
p=1
4. a/3=12
a=36
5. 0.6a=10
16.67(取自小數點後一個位)
6. 2(m-1)=5
m=3
7. m+3/4=3
m=9/4 or2.25
參考: myself
2007-07-24 5:36 pm
1. 2x+5x=28
7x=28
x=28/7
x=4
2. p-12=4
p=4+12
p=16
3. 5p=4p+9
5p-4p=9
p=9
4. a/3=12
a=12*3
a=36
5. 0.6a=10
a=10/0.6
a=16又3分之2
6. 2(m-1)=5
2m-2=5
2m=7
m=7/2
m=3.5
7. m+3/4=3
m=3-3/4
m=2.25
應該全部都岩嫁啦…
7x=28
x=28/7
x=4
2. p-12=4
p=4+12
p=16
3. 5p=4p+9
5p-4p=9
p=9
4. a/3=12
a=12*3
a=36
5. 0.6a=10
a=10/0.6
a=16又3分之2
6. 2(m-1)=5
2m-2=5
2m=7
m=7/2
m=3.5
7. m+3/4=3
m=3-3/4
m=2.25
應該全部都岩嫁啦…
參考: 我
2007-07-21 7:18 am
1. 2x + 5x = 28
7x = 28
x = 28/7 = 4
2. p - 12 = 4
p = 12 + 4 =16
3. 5p = 4p + 9
5p - 4p = 9
p=9
4. a / 3 = 12
a = 12 * 3 = 36
5. 0.6 a = 10
a = 10 / 0.6 = 100/6 = 50/3 (約16.66666)
6. 2 (m - 1) = 5
m - 1 = 5/2
m = 5/2 + 1 = 7/2 = 3.5
7. m + 3/4 = 3
m = 3 - 3/4 = 9/4 = 2.25
7x = 28
x = 28/7 = 4
2. p - 12 = 4
p = 12 + 4 =16
3. 5p = 4p + 9
5p - 4p = 9
p=9
4. a / 3 = 12
a = 12 * 3 = 36
5. 0.6 a = 10
a = 10 / 0.6 = 100/6 = 50/3 (約16.66666)
6. 2 (m - 1) = 5
m - 1 = 5/2
m = 5/2 + 1 = 7/2 = 3.5
7. m + 3/4 = 3
m = 3 - 3/4 = 9/4 = 2.25
參考: 自己
2007-07-21 7:01 am
1. 2x+5x=28
7x = 28
x = 4
2.p-12=4
p = 16
3.5p=4p+9
5p - 4p = 9
p = 9
4.a/3=12
a = 3 * 12 = 36
5. 0.6a=10
a = 10/0.6 = 16 2/3
6. 2(m-1)=5
m - 1 = 5/2 = 2.5
m = 2.5 + 1 = 3.5
7. m+3/4=3
m = 3 - 3/4 = 9/4
7x = 28
x = 4
2.p-12=4
p = 16
3.5p=4p+9
5p - 4p = 9
p = 9
4.a/3=12
a = 3 * 12 = 36
5. 0.6a=10
a = 10/0.6 = 16 2/3
6. 2(m-1)=5
m - 1 = 5/2 = 2.5
m = 2.5 + 1 = 3.5
7. m+3/4=3
m = 3 - 3/4 = 9/4
2007-07-21 6:58 am
1. 2x+5x=28
7x=28
x=4
2. p-12=4
p=12+4
p=16
3. 5p=4p+9
5p-4p=9
p=9
4. a/3=12
a=12x3
a=36
5. 0.6a=10
a=10/0.6
a=16.6
6. 2(m-1)=5
2m-1=5
2m=5+1
2m=6
m=3
7. m+3/4=3
m=3-3/4
m=2又4/1
7x=28
x=4
2. p-12=4
p=12+4
p=16
3. 5p=4p+9
5p-4p=9
p=9
4. a/3=12
a=12x3
a=36
5. 0.6a=10
a=10/0.6
a=16.6
6. 2(m-1)=5
2m-1=5
2m=5+1
2m=6
m=3
7. m+3/4=3
m=3-3/4
m=2又4/1
參考: me
收錄日期: 2021-04-13 00:49:29
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