若 2/5A=B(A,B都不等于0)则A:B=( ):( )
问题描述:
若 2/5A=B(A,B都不等于0)则A:B=( ):( )
答
2/5A=B
A:B=1:2/5=1×5:2/5×5=5:2
A:B=5:2
答
2:5
答
2/5A=B
A:B=5:2