Odpowiedź:
x-powierzchnia pola golfowego
[tex] \frac{1}{3} x + 3 + \frac{1}{4} x + 7 = x \\ \frac{4}{12} x + \frac{3}{12} x + 10 = x \\ \frac{7}{12} x + 10 = x \\ x - \frac{7}{12} x = 10 \\ \frac{5}{12} x = 10 \: \: \: \: \: | \times 12 \\ 5x = 120 \: \: \: \: \: | \div 5 \\ x = 24[/tex]
[tex] \frac{1}{3} x + 3 = \frac{1}{3} \times 24 + 3 = 8 + 3 = 11[/tex]
[tex] \frac{1}{4} x + 7 = \frac{1}{4} \times 24 + 7 = 6 + 7 = 13[/tex]
[tex]11 < 13[/tex]
