麻煩你們幫我解下列方程，要有步驟和答案，thx!
1. 4y-2y+1=-5
2. 3(h-0.5)-2(h-4.5)=7
f.1數（方程）
2006-11-06 2:52 am
回答 (14)
2006-11-06 2:57 am
✔ 最佳答案
1 ) 4y - 2y +1 = -54y - 2y = -5 -1
2y = -6
y = -3
2) 3 (h-0.5) - 2(h-4.5)=7
3h - 1.5 - 2h + 9 = 7
h = 7 +1.5 -9
h = -0.5
2006-11-06 6:14 am
1. 4y-2y+1=-5
2y+1=-5
2y=-5-1
2y=-6
y=-3
2. 3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9=7
h+7.5=7
h=7-7.5
h=-0.5
2y+1=-5
2y=-5-1
2y=-6
y=-3
2. 3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9=7
h+7.5=7
h=7-7.5
h=-0.5
2006-11-06 4:40 am
1.
4y - 2y + 1 = - 5
y(4 - 2) + 1 = - 5
.......2y + 1 = - 5
(2y + 1) - 1 = - 5 - 1
.............2y = - 6
......2y 除 2 = - 6 除 2
...............y = - 3
2.
3(h - 0.5) - 2(h - 4.5) = 7
......3h - 1.5 - 2h + 9 = 7
......3h - 2h - 1.5 + 9 = 7
.....................h + 7.5 = 7
..............................h = - 0.5
4y - 2y + 1 = - 5
y(4 - 2) + 1 = - 5
.......2y + 1 = - 5
(2y + 1) - 1 = - 5 - 1
.............2y = - 6
......2y 除 2 = - 6 除 2
...............y = - 3
2.
3(h - 0.5) - 2(h - 4.5) = 7
......3h - 1.5 - 2h + 9 = 7
......3h - 2h - 1.5 + 9 = 7
.....................h + 7.5 = 7
..............................h = - 0.5
參考: 已有知識
2006-11-06 4:06 am
4y-2y+1=-5
2y=-5-1
2y=6
y=3
3(h-0.5)-2(h-4.5)=7
3h-1.5-2h-9=7
h=7+1.5+9
h=17.5
2y=-5-1
2y=6
y=3
3(h-0.5)-2(h-4.5)=7
3h-1.5-2h-9=7
h=7+1.5+9
h=17.5
參考: no
2006-11-06 3:15 am
1.
4y-2y+1=-5
2y=-6
y=-3
2.
3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9=7
h=-0.5
4y-2y+1=-5
2y=-6
y=-3
2.
3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9=7
h=-0.5
2006-11-06 3:05 am
1. 4y-2y+1=-5
6y =-6
y= -1
2. 3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9 = 7
h= 3.5
6y =-6
y= -1
2. 3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9 = 7
h= 3.5
2006-11-06 3:02 am
1. 4y-2y+1=-5
2y=-6
y=-3
2. 3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9=7
h+7.5=7
h=-0.5
2y=-6
y=-3
2. 3(h-0.5)-2(h-4.5)=7
3h-1.5-2h+9=7
h+7.5=7
h=-0.5
2006-11-06 3:01 am
1. 4y-2y= -5-1
2y = -6
y = -6/2
y = -3
2. 3h-1.5-2h+9=7
h = 7+1.5-9
h = -0.5
2y = -6
y = -6/2
y = -3
2. 3h-1.5-2h+9=7
h = 7+1.5-9
h = -0.5
2006-11-06 2:58 am
1.
4y-2y+1=-5
2y = -5-1
2y = -6
y = -3
2.
3(h-0.5)-2(h-4.5)=7
3h - 1.5 - 2h +9 = 7
3h - 2h = 7 - 7.5
h = -0.5
4y-2y+1=-5
2y = -5-1
2y = -6
y = -3
2.
3(h-0.5)-2(h-4.5)=7
3h - 1.5 - 2h +9 = 7
3h - 2h = 7 - 7.5
h = -0.5
參考: I am a maths teacher
2006-11-06 2:57 am
1.
4y - 2y +1 = -5
2y = -5-1
2y = -6
y = -3
2.
3(h - 0.5) - 2(h - 4.5) = 7
3h - 1.5 - 2h + 9 = 7
h = 7+1.5 - 9
h = -1.5
2006-11-05 18:58:50 補充：
SORRY, 第二題 h = - 0.5
4y - 2y +1 = -5
2y = -5-1
2y = -6
y = -3
2.
3(h - 0.5) - 2(h - 4.5) = 7
3h - 1.5 - 2h + 9 = 7
h = 7+1.5 - 9
h = -1.5
2006-11-05 18:58:50 補充：
SORRY, 第二題 h = - 0.5
收錄日期: 2021-04-12 21:22:59
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