1 化最简整数比:4.5:3.6:0.81=____,1.8:2━ 3

问题描述:

1 化最简整数比:4.5:3.6:0.81=____,1.8:2━ 3

4.5:3.6:0.81=50:40:9,1.8:2-3=9:10-15