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Автор - 56373747

отец старше сына на в 5 раз. сколько лет сыну, если он младше отца на 28 лет

Ответ

Автор - sofilish

x - сын

5x - отец

5x-x=28

4x=28

x=7 лет сыну

7*5=35 лет отцу

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