1) 2/7 + 3 1/2 =3 11/14
2)3 11/14 * 4 2/3 = 17 2/3
Ответ: 17 2/3
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1) 2/7 + 3 1/2 =3 11/14
2)3 11/14 * 4 2/3 = 17 2/3
Ответ: 17 2/3