要有方程～！
１．
４
－ ｘ ｋ＝１０８
９
２．
２
－ ｘ ｈ － １５＝２５
３
３．
４５０－５ｇ＝２０５
４．
４ ｎ １
－ ＝ －－－ － －－
９ １４４ １８
５．４８ － ２ｐ ＝２４
６．５．２ ＋ ｗ ÷ 5.2 ÷ 2.3
p.6小學數學（解方程)２０點呀～！快快快～明天要比ｔｈ．．．．．．
2007-04-24 6:19 am
回答 (11)
2007-04-24 6:29 am
✔ 最佳答案
１．４
－ ｘ ｋ＝１０８
９
k = 108 * 9 / 4
k = 243
２．
２
－ ｘ ｈ － １５＝２５
３
h = ( 25 + 15 ) * 3 /2
h = 60
３．
４５０－５ｇ＝２０５
g = (450 - 205) / 5
g = 40
４．
４ ｎ １
－ ＝ －－－ － －－
９ １４４ １８
n = ( 4 / 9 + 1 / 18 ) * 144
n = (8 + 1)/18 * 144
n = 72
５．４８ － ２ｐ ＝２４
p = ( 48 - 24) /2
p = 12
６．2 = ｗ ÷ 5.2 ÷ 2.3
w = 2 * 52 * 23
w = 2392
2007-04-25 4:47 am
１．
４
－ ｘ ｋ＝１０８
９
k=108(9/4)
=243
２．
２
－ ｘ ｈ － １５＝２５
３
h=(25+15)(3/2)
=60
３．
４５０－５ｇ＝２０５
g=(205-450)(1/-5)
=49
４．
４ ｎ １
－ ＝ －－－ － －－
９ １４４ １８
n=144(4/9+1/18)
=72
５．４８ － ２ｐ ＝２４
p=(24-48)(1/-2)
=12
６．５．２ ＋ ｗ ÷ ５ ＝２．３
w=5(2.3-5.2)
=-14.5
４
－ ｘ ｋ＝１０８
９
k=108(9/4)
=243
２．
２
－ ｘ ｈ － １５＝２５
３
h=(25+15)(3/2)
=60
３．
４５０－５ｇ＝２０５
g=(205-450)(1/-5)
=49
４．
４ ｎ １
－ ＝ －－－ － －－
９ １４４ １８
n=144(4/9+1/18)
=72
５．４８ － ２ｐ ＝２４
p=(24-48)(1/-2)
=12
６．５．２ ＋ ｗ ÷ ５ ＝２．３
w=5(2.3-5.2)
=-14.5
2007-04-24 9:03 pm
1.
4k/9 = 108
4k = 108 x 9
k = 108 x 9 /4
k= 243
2.
2/3 x h = 25 + 15
2h = 40 x 3
h = 120 / 2
h = 60
3.
5g = 450 - 205
g = 245 / 5
g = 49
4.
先 9, 144, 18通分母:
n/144 = 4/9+1/18
n/144 = 1/2
n = 72
5.
2p = 48 -24
p = 24 / 2
p= 12
6.
５．２ ＋ ｗ ÷ ５ ＝２．３
w / 5 = 2.3 - 5.2
w = -2.9 x 5
w = -14.5
6
5.2 w ÷ 5 = 2.3
5.2 w = 2.3 x 5
w = 11.5 - 5.2
w = 6.3
4k/9 = 108
4k = 108 x 9
k = 108 x 9 /4
k= 243
2.
2/3 x h = 25 + 15
2h = 40 x 3
h = 120 / 2
h = 60
3.
5g = 450 - 205
g = 245 / 5
g = 49
4.
先 9, 144, 18通分母:
n/144 = 4/9+1/18
n/144 = 1/2
n = 72
5.
2p = 48 -24
p = 24 / 2
p= 12
6.
５．２ ＋ ｗ ÷ ５ ＝２．３
w / 5 = 2.3 - 5.2
w = -2.9 x 5
w = -14.5
6
5.2 w ÷ 5 = 2.3
5.2 w = 2.3 x 5
w = 11.5 - 5.2
w = 6.3
參考: me
2007-04-24 7:38 am
1) 4 / 9 x k = 108
k = [(108)x9 ] ÷ 4 *(凡將一乘數調過對面,須將其分子分母顛倒。)
k = 243
───────────────────────────────────────
2) 2 / 3 x h - 15 =25
h = [(25 + 15)x3] ÷ 2
h = 40 x 3 ÷ 2
h = 60
───────────────────────────────────────
3) 450 - 5g = 205
450 - 205 = 5g
245 = 5g
245 ÷ 5 = g
g = 49
───────────────────────────────────────
4) 4 / 9 = n / 144 - 1 / 18
4 / 9 + 1 / 18 = n / 144 *(負數調過去變正數)
(4x2 + 1) ÷ 18 = n / 144 *(主行通分母(18),由於9乘2才=18,因此其分子也要乘上2)
(9 / 18 ) x 144 = n
n = 72
───────────────────────────────────────
5) 48 - 2p = 24
48 - 24 = 2p
24 = 2p
p = 24 / 2
p = 12
───────────────────────────────────────
6) 5.2 + w ÷ 5 = 2.3
5.2 + w = 2.3 x 5
w = 2.3 x 5 - 5.2
w = 6.3
───────────────────────────────────────
k = [(108)x9 ] ÷ 4 *(凡將一乘數調過對面,須將其分子分母顛倒。)
k = 243
───────────────────────────────────────
2) 2 / 3 x h - 15 =25
h = [(25 + 15)x3] ÷ 2
h = 40 x 3 ÷ 2
h = 60
───────────────────────────────────────
3) 450 - 5g = 205
450 - 205 = 5g
245 = 5g
245 ÷ 5 = g
g = 49
───────────────────────────────────────
4) 4 / 9 = n / 144 - 1 / 18
4 / 9 + 1 / 18 = n / 144 *(負數調過去變正數)
(4x2 + 1) ÷ 18 = n / 144 *(主行通分母(18),由於9乘2才=18,因此其分子也要乘上2)
(9 / 18 ) x 144 = n
n = 72
───────────────────────────────────────
5) 48 - 2p = 24
48 - 24 = 2p
24 = 2p
p = 24 / 2
p = 12
───────────────────────────────────────
6) 5.2 + w ÷ 5 = 2.3
5.2 + w = 2.3 x 5
w = 2.3 x 5 - 5.2
w = 6.3
───────────────────────────────────────
參考: 純粹自己
2007-04-24 6:40 am
４
1.－ x ｋ ＝１０８
９
k = 108 x4
_
9
k=48
２
2. － x ｈ － １５＝２５
３
h = 25+15 除以2
_
3
h = 35
3. ４５０－５ｇ＝２０５
-5g = 450 - 205
-5g = 245
g = 49
5.４８ － ２ｐ ＝２４
-2p = 48+24
-2p = 72
p = 36
1.－ x ｋ ＝１０８
９
k = 108 x4
_
9
k=48
２
2. － x ｈ － １５＝２５
３
h = 25+15 除以2
_
3
h = 35
3. ４５０－５ｇ＝２０５
-5g = 450 - 205
-5g = 245
g = 49
5.４８ － ２ｐ ＝２４
-2p = 48+24
-2p = 72
p = 36
2007-04-24 6:37 am
1.
4k/9 = 108
4k = 108 x 9
k = 108 x 9 /4
k= 243
2.
2/3 x h = 25 + 15
2h = 40 x 3
h = 120 / 2
h = 60
3.
5g = 450 - 205
g = 245 / 5
g = 49
4.
先 9, 144, 18通分母:
n/144 = 4/9+1/18
n/144 = 1/2
n = 72
5.
2p = 48 -24
p = 24 / 2
p= 12
6.
５．２ ＋ ｗ ÷ ５ ＝２．３
w / 5 = 2.3 - 5.2
w = -2.9 x 5
w = -14.5
2007-04-24 10:22:06 補充：
不好意思算錯了第6條...........6 5.2 w ÷ 5 = 2.3 5.2 w = 2.3 x 5 w = 11.5 - 5.2 w = 6.3
4k/9 = 108
4k = 108 x 9
k = 108 x 9 /4
k= 243
2.
2/3 x h = 25 + 15
2h = 40 x 3
h = 120 / 2
h = 60
3.
5g = 450 - 205
g = 245 / 5
g = 49
4.
先 9, 144, 18通分母:
n/144 = 4/9+1/18
n/144 = 1/2
n = 72
5.
2p = 48 -24
p = 24 / 2
p= 12
6.
５．２ ＋ ｗ ÷ ５ ＝２．３
w / 5 = 2.3 - 5.2
w = -2.9 x 5
w = -14.5
2007-04-24 10:22:06 補充：
不好意思算錯了第6條...........6 5.2 w ÷ 5 = 2.3 5.2 w = 2.3 x 5 w = 11.5 - 5.2 w = 6.3
參考: me
2007-04-24 6:34 am
3.
450+450-5g=205
5g=205+450
5g=755
5g÷5=755÷ 5
g=151
450+450-5g=205
5g=205+450
5g=755
5g÷5=755÷ 5
g=151
2007-04-24 6:33 am
１．
４
－ ｘ ｋ＝１０８
９
9
k=108ｘ－
4
k=27x9
k=248
2.
２
－ ｘ ｈ － １５＝２５
３
2
－ x h=25+15
3
2
－ x h=40
3
3
h=－ x40
2
h=20x3
h=60
４
－ ｘ ｋ＝１０８
９
9
k=108ｘ－
4
k=27x9
k=248
2.
２
－ ｘ ｈ － １５＝２５
３
2
－ x h=25+15
3
2
－ x h=40
3
3
h=－ x40
2
h=20x3
h=60
參考: me
2007-04-24 6:32 am
1.
108 X 9/4=k
k=243
2.
2h/3=40
2h=120
h=60
3.
450-205=5g
245=5g
g=49
4.
4/9=n/144-8/144
4/9+8/144=n/144
1/2=n/144
n=72
5.
48-24=2p
24=2p
p=12
第6題係咪打錯題目ar??
108 X 9/4=k
k=243
2.
2h/3=40
2h=120
h=60
3.
450-205=5g
245=5g
g=49
4.
4/9=n/144-8/144
4/9+8/144=n/144
1/2=n/144
n=72
5.
48-24=2p
24=2p
p=12
第6題係咪打錯題目ar??
2007-04-24 6:29 am
1. k=108X9/4
k=243
2. 2/3 x h=25+15
2/3 x h=40
h=40x3/2
h=60
3.450-5g=205
450-205=5g
245=5g
g=49
4.n/144=4/9+1/18
n/144=1/2
n=72
5.48-2p=24
2p=48-24
p=12
6.你打錯野
2007-04-23 22:38:32 補充：
w / 5 = 2.3 - 5.2w = -2.9 x 5 w = -14.5
2007-04-25 21:21:40 補充：
第6條個度一定要將5.2調左先....
2007-04-25 21:24:38 補充：
因為先乘除後加減...所以:5.2 (w/5)=2.3因此要做左括號以外先
k=243
2. 2/3 x h=25+15
2/3 x h=40
h=40x3/2
h=60
3.450-5g=205
450-205=5g
245=5g
g=49
4.n/144=4/9+1/18
n/144=1/2
n=72
5.48-2p=24
2p=48-24
p=12
6.你打錯野
2007-04-23 22:38:32 補充：
w / 5 = 2.3 - 5.2w = -2.9 x 5 w = -14.5
2007-04-25 21:21:40 補充：
第6條個度一定要將5.2調左先....
2007-04-25 21:24:38 補充：
因為先乘除後加減...所以:5.2 (w/5)=2.3因此要做左括號以外先
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