( )÷4=9/( )= ( )÷20=0.75=( )/8

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()÷4=9/()=()÷20=0.75=()/8()÷4=9/()=()÷20=0.75=()/8()÷4=9/()=()÷20=0.75=()/8(3)÷4=9/(12)=(15)÷20=0.75

( )÷4=9/( )= ( )÷20=0.75=( )/8
( )÷4=9/( )= ( )÷20=0.75=( )/8

( )÷4=9/( )= ( )÷20=0.75=( )/8
( 3)÷4=9/(12 )= ( 15 )÷20=0.75=(6 )/8