方程式!!!
1.-20=5(6c+14)
2.3(b-2)=b+18
3.5(7+4p)+11=6
列式,一步不能少,help~help!!!
回答 (11)
✔ 最佳答案
1.
-20=5(6c+14)
-20=30c+70
-90=30c
c=-3
2.
3(b-2)=b+18
3b-6=b+18
2b=24
b=12
3.
5(7+4p)+11=6
35+20p+11=6
20p+46=6
20p=-40
p=-2
2007-10-03 20:57:04 補充:
上面果位..你計緊d乜?
參考: ME!
1.
-20=5(6c+14)
-20=30c+70
-20-70=30c+70-70(兩邊同時減70)
-90=30c
-90/30=30c/30 (兩邊同時除30)
- 3= c
即c= - 3
2.
3(b-2)=b+18
3b-6=b+18
3b-b=18+6(把相同的數放在一起,才進行運算)
2b=24
2b/2=24/2 (兩邊同時除2)
b=12
3.
5(7+4p)+11=6
35+20p+11=6
46+20p=6
46+20p- 46=6- 46(兩邊同時減46)
20p= - 40
20p/20= - 40/20 (兩邊同時除20)
p= - 2
參考: 自己
-20=5(6c+14)
(1.)-20=30c+70
-20+70=30c
50=30c
50/30=c
1 20/30=c
1 2/3=c
2.]3(b-2)=b+18
3b-6=b+18
3b-b-6=18
2b-6=18
2b=18+6
2b=24
b=24/2
b=12
3.]5(7+4p)+11=6
35+20p+11=6
46+20p=6
20p=6-46
20p=-40
p=-40/2
p=-20
1. .-20=5(6c+14)
-20=30c+70
-90=30c
-3=c
c=-3
2. 3(b-2)=b+18
3b-6=b+18
2b=24
b=12
3. 5(7+4p)+11=6
35+20p+11=6
20p=-40
p=-2
參考: 自己
1.
-20=5(6c+14)
-20=30c+70
-30c=70+20
-30c=90
c= -3
2.
3(b-2)=b+18
3b-6=b+18
3b-b=18+6
2b=24
b=12
3.
5(7+4p)+11=6
35+20p+11=6
20p=6-35-11
20p= -40
p= -2
參考: myself
1)-20 = 5(6c+14)
-20/5= 6c+14
-4 = 6c+14
-18 = 6c
c = (-3)
2)3(b-2) =b+18
(b-2) =(b18)/3
b-2 =(b/3)+(18/3)
b-2 = (b/3) +6
b-2-6 =(b/3)
b-8 =(b/3)
(b-8)*3=b
3b-24 =b
3b-b =24
2b =24
b =12
3)5(7+4p)+11=6
5(7+4p)=6-11
5(7+4p)=(-5)
(7+4p)=(-1)
4p=(-8)
p=(-2)
哈哈,夠長啦...
參考: ^-^自己
1. 5(6c+14)=-20
6c+14=(-20)/5
6c+14=-4
6c=-4-14
6c=-18
c=-3
2. 3(b-2)=b+18
3b-6=b+18
3b-b=18+6
2b=24
b=24/2
b=12
3. 5(7+4p)+11=6
35+20p+11=6
20p+46=6
20p=6-46
20p=-40
p=(-40)/20
p=-2
希望幫到你啦!
參考: 自我計算
1. -20=30c+70
-20-70=30c
-90=30c
c=-3
2. 3b-6=b+18
3b-b=18+6
2b=24
b=12
3. 35+20p+11=6
20p=6-35-11
20p=-40
p=-2
-20=5(6c+14)
-20=30c+70
-20+70=30c
50=30c
30c=50
c=30/50
c=6/25
~x/x=分數
3(b-2)=b+18
3b-6=b+18
3b-b=18+6
2b=24
b=12
5(7+4p)+11=6
35+20p+11=6
46+20p=6
20p=6-46
20p=-40
p=-2
2007-10-03 21:00:13 補充:
sorry,1)-20=5(6c 14)-20=30c 70-30c=70 20-30c=9030c=-90c=-3
1 ).-20=5(6c+14)
-20=30C+70
-30C=90
-c=-3
3=C
c=3
2 ).3(b-2)=b+18
3B-6=b+18
2b=24
b=12
3 )5(7+4p)+11=6
35+20p+11=6
40=-20p
-2=-P
p=2
參考: ME
1
-20=5(6c+14)
-20=30c+70
30c=-90
c=-3
2
3(b-2)=b+18
3b-6=b+18
2b=24
b=12
3
5(7+4p)+11=6
35+20p+11=6
20p+46=6
20p=-40
p=-2
收錄日期: 2021-04-13 19:28:08
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