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CactusBonny
@CactusBonny
June 2021
1
13
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номер 11 помогите! умоляю!!! :'(
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mmb1
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1) 1/9+1/10=10/90+9/90=19/90 две трубы за минуту
1/3*19/90=19/270 за треть минуты
2. 2/3*36=24 марки в альбом
осталось 36-24=12
1/4*12=3 марки подарил
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Answers & Comments
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1) 1/9+1/10=10/90+9/90=19/90 две трубы за минуту1/3*19/90=19/270 за треть минуты
2. 2/3*36=24 марки в альбом
осталось 36-24=12
1/4*12=3 марки подарил