Odpowiedź:
[tex]a)\ \ 3\frac{5}{6}+4\frac{4}{9}=3\frac{30}{36}+4\frac{16}{36}=7\frac{46}{36}=8\frac{10}{36}=8\frac{5}{18}\\\\\\b)\ \ 2,8+0,6=3,4\\\\\\c)\ \ 8\frac{2}{3}-4\frac{4}{5}=8\frac{10}{15}-4\frac{12}{15}=7\frac{25}{15}-4\frac{12}{15}=3\frac{13}{15}\\\\\\d)\ \ 8,3-3,5=4,8\\\\\\e)\ \ 7\frac{1}{2}\cdot2\frac{3}{5}=\frac{\not15^3}{2}\cdot\frac{13}{\not5_{1}}=\frac{39}{2}=19\frac{1}{2}[/tex]
[tex]f)\ \ 0,3\cdot1,8=0,54\\\\\\g)\ \ 4\frac{4}{5}:1\frac{5}{7}=\frac{24}{5}:\frac{12}{7}=\frac{\not24^2}{5}\cdot\frac{7}{\not12_{1}}=\frac{14}{5}=2\frac{4}{5}\\\\\\h)\ \ 6,4:0,08=640:8=80[/tex]
