dau coroana va rogg ajutati

Răspuns:
Explicație pas cu pas:
5.............1/7..........3............2/3................7/5.........11/12..........15/4..........23/3.....62/7
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1/5 ..........7..............1/3.........3/2...............5/7..........12/11..........4/15..........3/23......7/62