F.2主項變換{{幾個鐘之後就要交喇,,}}{非常急}

1. a+b+c=180
a=180-b-c

2. S = 1/3 Ah
S(3)=Ah
(s(3))/A=h

3. y = 4x-1
y+1=4x
(y+1)/4=x

4. K = (b-2)A+a
K=ba-2A+a
a=K-ba+2A

5. m = 1/2(a-b)
m(2)(a-b)=1
2m(a-b)=1
a-b=1/2m
a=1/2m+b

6.a = 6-b/5
b/5=6-a
b=(6-a)(5)
b=30-5a

7. m/2 = 2n+3/3
(6)(m/2)=(6)(2n+3/3)
3m=4n+6
4n=3m-6
n=3m-6/4

8. R = sa-sk
R=(s)(a-k)
s=R/(a-k)

9.b/a - 1/a =4
(a)(b/a-1/a)=4(a)
b-1=4a
b=4a+1


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你見到我打出黎唔同既你話我聽我再系補充搞掂果幾題-__-..
睇唔明既補充度寫低..我到時再講>"<..
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1. a+b+c = 180
a+b = 180-c
a = 180-b-c

2. S = 1/3 Ah
S*3 = Ah
(S*3)/A = h
h = (3S)/A

3. y = 4x-1
y+1 = 4x
(y+1)/4 = x
x = (y+1)/4

4. K = (b-2)A+a
K-a = (b-2)A
(K-a)/(b-2) = A
A = (K-a)/(b-2)

5. m = 1/2(a -b)
m*2 = a-b
2m+b = a

6. a = 6-b/5
a*5 = 6-b
(a*5)/6 = -b
b = -5a/6

7. m/2 = 2n+3/3
(m/2)*3 = 2n+3
[(m/2)*3]-3 = 2n
{[(m/2)*3]-3}/2 = n
n = {[(3m)/2]-3}/2

8. R = sa-sk
R = s(a-k)
R/(a-k) = s
s = R/(a-k)

9. b/a - 1/a = 4
(b-1)/a = 4
b-1 = 4a
b = 4a+1

2009-11-26 18:15:32 補充：
好似上面果位岩D= =...
第7題有D分數我都冇搞掂...|||
唔揀我都冇所謂..幫到你就得喇=]

1.a=180-b-c
2.3S/A=h
3.(y+1)/4=x
4.K - (b-2)A=a
5.2m+b
6.你係咪話a=(6-b)/5? 答案: 6-5a=b，如果係a=6-(b/5)答案: (6-a)5=b
7.m/2 = (2n+3)/3 ? 答案: (3m-6)/4=n
8. R/(a-k)=s
9.4a+1=b

2009-11-26 18:06:12 補充：
漏左式，你用番依到，上面有小小打錯野：
1.a+b+c=180
a=180-b-c
2. S= 1/3 Ah
3S=Ah
3S/A = h
3.y=4x-1
y+1=4x
(y+1)/4=x
4. K=(b-2)A+a
K-a=(b-2)A
(K-a)/(b-2)=A
5.m=1/2 (a-b)
2m=a-b
2m+b=a

2009-11-26 18:06:18 補充：
6.a=(6-b)/5 / a=6-b/5
5a=6-b a+b/5=6
5a+b=6 b/5=6-a
b=6-5a b=(6-a)5
7.m/2 = (2n+3)/3
3m/2 = 2n+3
3m/2 - 3 =2n
3m/2 - 6/2 = 2n
(3m-6)/2 = 2n
(3m-6)/4 = n
8.R=sa-sk
R=s(a-k)
R/(a-k)=s
9.b/a - 1/a = 4
(b-1)/a=4
b-1=4a
b=4a+1