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[tex]2\frac{2}{3}\cdot3\frac{3}{4}=\frac{2\cdot3+2}{3}\cdot\frac{3\cdot4+3}{4}=\frac{6+2}{3}\cdot\frac{12+3}{4}=\frac{\not8^2}{\not3_1}\cdot\frac{\not15^5}{\not4_1}=10\\\\\huge\boxed{\text{Odp}. \ \text{D}}[/tex]
