Odpowiedź :
Odpowiedź:
3 - 1/4 = 2 i 4/4 - 1/4 = 2 i 3/4
5 - 5/7 = 4 i 7/7 - 5/7 = 4 i 2/7
3 i 4/9 - 7/9 = 2 i 13/9 - 7/9 = 2 i 4/9
2 i 7/12 - 1 i 11/12 = 1 i 19/12 - 1 i 11/12 = 8/12 = 2/3
Odpowiedź:
[tex]3-\frac{1}{4} =2\frac{4}{4} -\frac{1}{4} =2\frac{3}{4} \\\\ 5-\frac{5}{7}=4\frac{7}{7} -\frac{5}{7} =4\frac{2}{7} \\\\ 3\frac{4}{9} -\frac{7}{9} =2\frac{13}{9} -\frac{7}{9} =2\frac{6}{9} =2\frac{2}{3} \\\\ 2\frac{7}{12} -1\frac{11}{12} =1\frac{19}{12} -1\frac{11}{12} =\frac{8}{12} =\frac{2}{3}[/tex]
