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=( ):( )

  2/5A=B
  A:B=1:2/5=1×5:2/5×5=5:2
A:B=5:2

2:5

2/5A=B
A:B=5:2