3/7X:1/3=4:7
问题描述:
3/7X:1/3=4:7
答
3/7X:1/3=4:7
1/3×4=7×3/7x
x=4/9
3/7X:1/3=4:7
3/7X:1/3=4:7
1/3×4=7×3/7x
x=4/9