Ответы на вопрос:
4/7+(-11/140)=80-11/140=69/140 -4/9-5/12=-16+15/36=-31/36 14/9: (-16/13)=-1 19/72
30: 5=6,31: 5=6(ост.1),32: 5=6(ост.2),33: 5=6(ост.3),34: 5=6(ост.4),35: 5=7,36: 5=7(ост.1),37: 5=7(ост.2 30: 6=5,31: 6=5(ост.1),32: 6=5(ост.2),33: 6=5(ост.3),34: 6=5(ост.4),35: 6=5(ост.5),36: 6=6,37: 6=6(ост.1) 30: 7=4(ост.2),31: 7=4(ост.3),32: 7=4(ост.4),33: 7=4(ост.5),34: 7=4(ост.6),35: 7=5,36: 7=5(ост.1),37: 7=5(ост.2)
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