哩條題目要點樣解...
要步驟...
更新1:
3x-40+x+x+(x/2)=180 2條幫我解....
問一條數學問題!!急!!2a+a+(a/2)+5=180
回答 (3)
2008-09-04 2:03 am
✔ 最佳答案
1)2a+a+(a/2)+5=1803a+a/2=175
2(3a+a/2)=175x2
6a+a=350
7a=350
a=50
2)3x-40+x+x+(x/2)=180
3x+x+x+(x/2)=220
2[3x+x+x+(x/2)=220x2
6x+2x+2x+x=440
11x=440
x=40
參考: me *v*
2008-09-08 2:02 am
2a+a+(a/2)+5 =180
2x{(2+1+1/2)a+5}=180x2
7a+10 =360
a =(360-10)/7
a =50
3X-40+X+X+(X/2)=180
2x{(3+1+1+1/2)X-40}=180x2
11X-80 =360
X =(360+80)/11
X =40
2x{(2+1+1/2)a+5}=180x2
7a+10 =360
a =(360-10)/7
a =50
3X-40+X+X+(X/2)=180
2x{(3+1+1+1/2)X-40}=180x2
11X-80 =360
X =(360+80)/11
X =40
參考: ME
2008-09-04 1:36 am
1)
2a+a+(a/2)+5=180
2﹝2a+a+(a/2)+5﹞=2(180)
4a+2a+a+10=360
7a=350
a=50
2)
3x-40+x+x+(x/2)=180
2﹝3x-40+x+x+(x/2﹞=2(180)
6x-80+2x+2x+x=360
11x=440
x=40
2a+a+(a/2)+5=180
2﹝2a+a+(a/2)+5﹞=2(180)
4a+2a+a+10=360
7a=350
a=50
2)
3x-40+x+x+(x/2)=180
2﹝3x-40+x+x+(x/2﹞=2(180)
6x-80+2x+2x+x=360
11x=440
x=40
參考: me
收錄日期: 2021-04-30 22:21:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080903000051KK01356