Odpowiedź :
[tex]x + x + 5 + \frac{1}{2} \times x + x - 3 + 2x = 57 \\ 5.5x = 57 + 3 - 5 \\ 5.5x = 55 | \div 5.5 \\ x = 10[/tex]
Kasia ma 10 nalepek
[tex]x + x + 5 + \frac{1}{2} \times x + x - 3 + 2x = 57 \\ 5.5x = 57 + 3 - 5 \\ 5.5x = 55 | \div 5.5 \\ x = 10[/tex]
Kasia ma 10 nalepek