Odpowiedź:
j) [tex]2\frac{3}{4} -1\frac{1}{3} =2\frac{9}{12} -1\frac{4}{12} =1\frac{5}{12}[/tex]
k) [tex]3\frac{5}{7} +6\frac{1}{4} =3\frac{20}{28} +6\frac{7}{28} =9\frac{27}{28}[/tex]
l) [tex]8\frac{1}{2} *2\frac{4}{5}=\frac{17}{2} *\frac{14}{5} =\frac{17}{1} *\frac{7}{5} =\frac{119}{5}=23\frac{4}{5} =23,8[/tex]
ł) [tex]6-3\frac{7}{9} =5\frac{9}{9} -3\frac{7}{9} =2\frac{2}{9}[/tex]
m) [tex]5,2-1\frac{3}{8} =5\frac{2}{10} -1\frac{3}{8} =5\frac{1}{5}-1\frac{3}{8} =5\frac{8}{40}-1\frac{15}{40}=4\frac{48}{40} -1\frac{15}{40} =3\frac{33}{40}[/tex]
n) [tex]4\frac{6}{9} :1\frac{2}{3} =\frac{42}{9} *\frac{3}{5} =\frac{42}{3} *\frac{1}{5} =\frac{42}{15} =2\frac{12}{15}[/tex]
o) [tex]3*4\frac{3}{4} =\frac{3}{1} *\frac{19}{4}=\frac{57}{4}=14\frac{1}{14}[/tex]
Mam nadzieję, że dobrze. Liczę na naj.
