Please solve the following equations. You should show all the steps.
1) 2x +8(3x-5) = 12
2) 9 - 2x/3 = 6
Simple equation
2006-12-25 4:37 am
回答 (3)
2006-12-25 9:33 pm
✔ 最佳答案
(1).2x + 8 (3x - 5) = 12
2 [x + 4 (3x – 5)] = 2 (6)
x + 4 (3x – 5) = 6
x + 12x – 20 = 6
13x – 20 = 6
13x = 26
x = 2
(2).
9 - 2x / 3 = 6
3 (9 – 2x / 3) = 3 (6)
27 – 2x = 18
27 - 2x – 18 = 18 – 18
9 - 2x = 0
9 = 2x
X = 9/2 or 4 1/2
參考: Me, 自己 DIY 計, 不用問人, 包正確
2006-12-25 4:42 am
1) 2x +8(3x-5) = 12
2x+24x-40 = 12
26x-40= 12
26x= 52
x= 2
2) 9- 2x/3= 6
9=6+2x/3
3= 2x/3
3*3/2=2x/3*3/2
9/2=x
x= 2/9 or 4 1/2
2x+24x-40 = 12
26x-40= 12
26x= 52
x= 2
2) 9- 2x/3= 6
9=6+2x/3
3= 2x/3
3*3/2=2x/3*3/2
9/2=x
x= 2/9 or 4 1/2
2006-12-25 4:42 am
2x+8(3x)-8(5)=12
26x-40=12
26x=52
x=2
9-2x/3=6
9-6=(2/3)x
3=(2/3)x
9/2=x
26x-40=12
26x=52
x=2
9-2x/3=6
9-6=(2/3)x
3=(2/3)x
9/2=x
收錄日期: 2021-04-12 22:14:32
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