(1) 4x-18=22
(2)哥哥有45元,弟弟有29元,哥哥要比給弟弟幾元,二人所有款項先相等?
設哥哥要給弟弟x元
(3)梯形上底6cm,下底 10cm,如果臉積是56cm2?
要梯形既高
設梯形既高是y cm
(20點)
我想問幾條方程式 (要部睪同條式 )
2007-09-17 7:04 pm
回答 (2)
2007-09-17 7:10 pm
✔ 最佳答案
(1) 4x - 18 = 224x = 22 + 18
4x = 40
x = 10
(2) 45 - x = 29 + x
45 - 29 = x + x
16 = 2x
x = 8
(3) (6 + 10) Y = 56
y = 56 / 16
y = 3.5
2007-09-17 11:12:18 補充：
Sorry, correction:(3) (6 10) Y = 56 x 2y = 112 / 16y = 7
2007-09-18 11:25 pm
(1)4x-18=22
4x=40
x=10
(2) 45 - x = 29 + x
45 - 29= x + x
16= 2x
x= 8
(3) (6+10)x=56
x=3.5
2007-09-18 15:27:01 補充：
上面個人第3條Qright,why he/she said it was wrong
4x=40
x=10
(2) 45 - x = 29 + x
45 - 29= x + x
16= 2x
x= 8
(3) (6+10)x=56
x=3.5
2007-09-18 15:27:01 補充：
上面個人第3條Qright,why he/she said it was wrong
收錄日期: 2021-04-13 19:04:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070917000051KK00741