15÷( )=5:( )= 2.5 = 20分之几?
问题描述:
15÷( )=5:( )= 2.5 = 20分之几?
快点!有急用!
答
15÷(6 )=5:(2 )= 2.5 = 20分之50
15÷( )=5:( )= 2.5 = 20分之几?
快点!有急用!
15÷(6 )=5:(2 )= 2.5 = 20分之50