Oblicz: a) 3,6 + [latex] frac{2}{3} [/latex] b) 4[latex] frac{1}{8} [/latex] - 1,11 c) 2,75 + [latex] frac{2}{7} [/latex] d) 0,125 - [latex] frac{1}{9} [/latex] e) 3[latex] frac{1}{3} [/latex] - 3,3 f) 1[latex] frac{1}{5} [/latex] - 0,09 Dam naj! 

a) [latex]3,6 + frac{2}{3} =3 frac{3}{5} + frac{2}{3} = frac{18}{5} + frac{2}{3}=frac{54}{15} + frac{10}{15}=frac{64}{15}=4 frac{4}{15} [/latex] b) [latex]4 frac{1}{8} - 1,11=4,125-1,11=3,015[/latex] c) [latex]2,75 + frac{2}{7} =2 frac{3}{4} + frac{2}{7} =frac{11}{4} + frac{2}{7}=frac{77}{28} + frac{8}{28}=frac{85}{28}=3 frac{1}{28} [/latex] d) [latex]0,125 - frac{1}{9} = frac{1}{8}- frac{1}{9}=frac{9}{72}- frac{8}{72}= frac{1}{72} [/latex] e) [latex]3 frac{1}{3} - 3,3=3,(3)-3,3=0,0(3)[/latex] f) [latex]1 frac{1}{5} - 0,09=1,2-0,09=1,11[/latex]