Ответ:
2) 1. 30:9=3(ост.3)
3•9+3=30
3<9
2. 58:7=8(ост.2)
8•7+2=58
3)420:3=140
420:4=105
420:5=84
420:6=70
420:7=60.
5•12=60
5•15=75
5•18=90
5•14=70
5•16=80
........................
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Ответ:
2) 1. 30:9=3(ост.3)
3•9+3=30
3<9
2. 58:7=8(ост.2)
8•7+2=58
3)420:3=140
420:4=105
420:5=84
420:6=70
420:7=60.
5•12=60
5•15=75
5•18=90
5•14=70
5•16=80
........................