Odpowiedź :
[tex]w = \frac{1}{2a} + \frac{p}{a} | \times 2a \\ w \times 2a = 1 + 2p | \div w \\ 2a = \frac{1 + 2p}{w} | \div 2 \\ a = \frac{1 + 2p}{w} \div 2[/tex]
[tex]w = \frac{1}{2a} + \frac{p}{a} | \times 2a \\ w \times 2a = 1 + 2p | \div w \\ 2a = \frac{1 + 2p}{w} | \div 2 \\ a = \frac{1 + 2p}{w} \div 2[/tex]