Верна ли пропорция 3:2/3=21:4целых2/3

Question

Верна ли пропорция 3:2/3=21:4целых2/3

Comments

5:2/3=30:3 1/33

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5:2/3=30:3 1/3

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15/2=30:(10/3);

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15/2=(30*3)/10

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15/2=9/1

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неверно

Answer 1

3:(2/3)=21:(4 2/3)
9:2=21:(14/3)
9:2=(21*3):14
9:2=9:2-верно
ответ: верна.