7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
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7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
4个等号3道题?
7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1=
4个等号3道题?