2X=0.5;.025
问题描述:
2X=0.5;.025
答
5分之2:2X=0.5:0.25
2/5:2x=2:1
4x=2/5
x=1/10
2X=0.5;.025
5分之2:2X=0.5:0.25
2/5:2x=2:1
4x=2/5
x=1/10