已知a/(b+2c)=b/(c+2a)=c/(a+2b),且a+b+c≠0,求(3b+c)/a=b的值.我输错了应把等号输加号改为:求(3b+c)/a+b的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 01:31:38
![已知a/(b+2c)=b/(c+2a)=c/(a+2b),且a+b+c≠0,求(3b+c)/a=b的值.我输错了应把等号输加号改为:求(3b+c)/a+b的值](/uploads/image/z/3925191-39-1.jpg?t=%E5%B7%B2%E7%9F%A5a%2F%28b%2B2c%29%3Db%2F%28c%2B2a%29%3Dc%2F%28a%2B2b%29%2C%E4%B8%94a%2Bb%2Bc%E2%89%A00%2C%E6%B1%82%283b%2Bc%29%2Fa%3Db%E7%9A%84%E5%80%BC.%E6%88%91%E8%BE%93%E9%94%99%E4%BA%86%E5%BA%94%E6%8A%8A%E7%AD%89%E5%8F%B7%E8%BE%93%E5%8A%A0%E5%8F%B7%E6%94%B9%E4%B8%BA%EF%BC%9A%E6%B1%82%283b%2Bc%29%2Fa%2Bb%E7%9A%84%E5%80%BC)
已知a/(b+2c)=b/(c+2a)=c/(a+2b),且a+b+c≠0,求(3b+c)/a=b的值.我输错了应把等号输加号改为:求(3b+c)/a+b的值
已知a/(b+2c)=b/(c+2a)=c/(a+2b),且a+b+c≠0,求(3b+c)/a=b的值.
我输错了应把等号输加号
改为:求(3b+c)/a+b的值
已知a/(b+2c)=b/(c+2a)=c/(a+2b),且a+b+c≠0,求(3b+c)/a=b的值.我输错了应把等号输加号改为:求(3b+c)/a+b的值
a/(b+2c)=b/(c+2a)=c/(a+2b)=(a+b+c)/(3a+3b+3c)=1/3
3a=b+2c
3b=c+2a
3c=a+2b
解得a=b=c
2
(3b+c)/a+b里a+b有括号的吧
求(3b+c)/a=b?
4