已知(0.1X-0.001Y)⼀(X+Y)=0.003 ,求x:y=?

2025-06-26 12:09:37
推荐回答(1个)
回答1:

也就是(100x-y)/(x+y)=3,得100x-y=3x+3y,得97x=4y,所以x:y=4:97