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Mathematics, 07.12.2020 15:10 chevystewart6628

Urgent, am nevoie de ajutor.. 1. $C\frac{3}{n}$ =2 $C\frac{2}{n}$

2. $A\frac{2}{n+3} =20$

3. $P_{n} =120$

4. $7A\frac{3}{n} = 15C\frac{n-5}{n}$

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Urgent, am nevoie de ajutor.. 1. =2

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