Ответ:
5/16+7/20=53/80
1/6+7/15=19/30
1/4+2/2=1 1/4
3/5-3/7=6/35
9/22-16/77=31/154.
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Ответ:
5/16+7/20=53/80
1/6+7/15=19/30
1/4+2/2=1 1/4
3/5-3/7=6/35
9/22-16/77=31/154.