a+b+c=10/9 (1)
b-a=1/2,(2)
b-c=7/18 (3)
(2)+(3)得a+c=2b-8/9
代入(1)得2b-8/9+b=10/9
解得b=2/3
代入(2)得a=1/6
代入(3)得c=5/18
已知a+b+c=九分之十,b-a=二分之一,b-c=十八分之七,a、b、c三个数各是多少?
已知a+b+c=九分之十,b-a=二分之一,b-c=十八分之七,a、b、c三个数各是多少?
快
快
数学人气:501 ℃时间:2019-09-30 19:26:06
优质解答
我来回答
类似推荐
猜你喜欢
- 1they are going to go fishing tomorrow morning 改为一般疑问句 并做肯定回答
- 2He seemed _______what had happened . A to know B know C knows D knowing选啥求解释仔细些
- 3将一个直径是12厘米的圆分成64等份后,拼成一个近似的长方形,这个长方形的长和宽各是多少厘米?
- 4母亲的目光 阅读理解
- 5函数y=ln(x-的1)反函数
- 6英语翻译
- 7六年级下册词语手册第18课的举一反三答案
- 8Look!There are too many people in the music a___t_r_u_
- 9有四个数,每次取其中三个数相加,得到的和分别为22、24、27和20.求这四个数各是多少?
- 10You didn't use to like him much when we were at school ,did you