ПОМОГИТЕ ПОЖАЛУЙСТА!!!!! 1.Сократите дроби:
42/720; 75/300; 40/64; 3/243; 18/300; 45/900; 120/180.
2.Сократите:
4·5/3·6; 15·3/11·10; 14·9/15·7; 2·3/9·8.
3.Вычеслите:
3³·2³+(14·12-5²)-(2³)²=?
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