7/9=( )/( )=21/( )=( )/63=( )保留两位小数.

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7/9=( )/( )=21/( )=( )/63=( )保留两位小数.
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7/9=( )/( )=21/( )=( )/63=( )保留两位小数.
7/9=( )/( )=21/( )=( )/63=( )保留两位小数.

7/9=( )/( )=21/( )=( )/63=( )保留两位小数.
7/9=(14 )/( 18)=21/( 27)=( 49)/63=( 0.78)

14,18 27 49 0.78

7/9=(14)/(18)=21/(27)=(49)/63=(0.78)

14/18
27
49
0.7777.....