求比值.15:5= 1.4:2.1= 3/8:1/2=
问题描述:
求比值.15:5= 1.4:2.1= 3/8:1/2=
答
15:5=3;
1.4:2.1= 2:3;
3/8:1/2=3:4;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,