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Ответ

Автор - nika240303
2.
1) frac{ {x}^{2} }{x}  : u :  frac{2}{x}
2)
 frac{ {a}^{2} }{a}  : u :  frac{3}{a}
3)
 frac{a}{b}  : u :  frac{3a{b}^{3} }{b}
4)
 frac{x}{y}  : u :  frac{2 {x}^{2}  {y}^{2} }{y}
Остальное на фото

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