Obliczenia
[tex]3\frac{1}{5}+2,5=3\frac{1\cdot2}{5\cdot2}+2,5=3\frac{2}{10}+2,5=3,2+2,5=5,7\\\\\huge\boxed{\text{Odp}. \ \text{A}}\\\\7,6-4\frac{1}{3}=7\frac{6}{10}-4\frac{1}{3}=7\frac{6:2}{10:2}-4\frac{1}{3}=7\frac{3}{5}-4\frac{1}{3}=7\frac{3\cdot3}{5\cdot3}-4\frac{1\cdot5}{3\cdot5}=7\frac{9}{15}-4\frac{5}{15}=3\frac{4}{15}\\\\\huge\boxed{\text{Odp}. \ \text{C}}[/tex]
