1. (2-q)/3=q
2. t/2+t/4=6
3. k/30+5=k/10
4. 3(x-0.5)-2(x-4.5)=7
5. (d-1)/4=(2d+5)/6
maths************
2010-10-29 2:33 am
回答 (2)
2010-10-29 9:09 am
✔ 最佳答案
1.(2-q)/3=q
2-q=3q
2=3q+q
2=4q
q=2/4
q=1/2
2.
t/2+t/4=6
2t+t=24
3t=24
t=24/3
t=8
3.
k/30+5=k/10
k+5*30=3k
150=3k-k
2k=150
k=150/2
k=75
4.
3(x-0.5)-2(x-4.5)=7
3x-1.5-2x+9=7
3x-2x=7+1.5-9
x= -0.5
5.
(d-1)/4=(2d+5)/6
6(d-1)=4(2d+5)
6d-6=8d+20
-6-20=8d-6d
-26=2d
d= -26/2
d= -13
2010-10-29 2:35 am
1. (2-q)/3=q
2-q = 3q
2 = 4q
q = 1/2
2. t/2+t/4=6
2t + t = 24
3t = 24
t = 8
3. k/30+5=k/10
k + 150 = 3k
2k = 150
k = 75
4. 3(x-0.5)-2(x-4.5)=7
3x - 1.5 - 2x + 9 = 7
x = 7-9+1.5
x = 0.5
5. (d-1)/4=(2d+5)/6
6d-6 = 8d+20
2d = -6-20
d = -3-10
d = -13
2-q = 3q
2 = 4q
q = 1/2
2. t/2+t/4=6
2t + t = 24
3t = 24
t = 8
3. k/30+5=k/10
k + 150 = 3k
2k = 150
k = 75
4. 3(x-0.5)-2(x-4.5)=7
3x - 1.5 - 2x + 9 = 7
x = 7-9+1.5
x = 0.5
5. (d-1)/4=(2d+5)/6
6d-6 = 8d+20
2d = -6-20
d = -3-10
d = -13
參考: Hope the solution can help you^^”
收錄日期: 2021-04-19 23:30:39
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