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Ответ

Ответ дан
Пеппер

Ответ:

27/70

Пошаговое объяснение:

3/10 : 7/9 =(3*9)/(10*7) = 27/70

Ответ

Ответ дан
TheCleverOlya

Ответ:

27:70

Пошаговое объяснение:

1способ

(3/10) : (7/9)=...

  • так как НОК(9;10)=3*3*2*5=90,

то ...=(3/10)*90 : (7/9)*90=3*9 : 7*10=27 : 70

2способ

(3/10):(7/9)=...

  • так как (a/b):(c/d)=(a*d):(b*c),

то ...=(3*9):(10*7)=27:70

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