Ответ:
=7/9(3 5/14- 2 3/14)=7/9* 1 2/14=7/9* 1 1/7=7/9*8/7=8/9
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Ответ:
=7/9(3 5/14- 2 3/14)=7/9* 1 2/14=7/9* 1 1/7=7/9*8/7=8/9