( )/40=12除以( )=0.25=3/2乘以( )=5/3除以( )

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()/40=12除以()=0.25=3/2乘以()=5/3除以()()/40=12除以()=0.25=3/2乘以()=5/3除以()()/40=12除以()=0.25=3/2乘以()=5/3除以()(

( )/40=12除以( )=0.25=3/2乘以( )=5/3除以( )
( )/40=12除以( )=0.25=3/2乘以( )=5/3除以( )

( )/40=12除以( )=0.25=3/2乘以( )=5/3除以( )
(10 )/40=12除以(48 )=0.25=3/2乘以(0.2 )=5/3除以(20/3 )

10
48
6
20/3