4.
a)
[tex]5 \frac{4}{7} - \frac{2}{7} = 5 \frac{2}{7} [/tex]
[tex]7 \frac{6}{9} - \frac{4}{9} = 7 \frac{2}{9} [/tex]
[tex]5 \frac{4}{7} - \frac{3}{7} = 5 \frac{1}{7} [/tex]
[tex]7 \frac{6}{9} - \frac{4}{9} = 7 \frac{2}{9} [/tex]
b)
[tex]4 \frac{2}{7} - 3 = 1 \frac{2}{7} [/tex]
[tex]9 \frac{6}{17} - 5 = 4 \frac{6}{17} [/tex]
[tex]15 \frac{4}{11} - 14 = 1 \frac{4}{11} [/tex]
[tex]19 \frac{17}{19} - 17 = 2 \frac{17}{19} [/tex]
c)
[tex]5 \frac{4}{7} - 2 \frac{2}{7} = 3 \frac{2}{7} [/tex]
[tex]9 \frac{6}{11} - 6 \frac{4}{11} = 3 \frac{2}{11} [/tex]
[tex]12 \frac{8}{15} - 12 \frac{4}{15} = \frac{4}{15} [/tex]
[tex]27 \frac{16}{19} - 1 \frac{3}{19} = 26 \frac{13}{19} [/tex]
5.
a)
[tex]5 \frac{7}{8} - 1 \frac{3}{8} = 4 \frac{4}{8} = 4 \frac{1}{2} [/tex]
b)
[tex]9 \frac{11}{12} - 3 \frac{5}{12} = 6 \frac{6}{12} = 6 \frac{1}{2} [/tex]
c)
[tex]14 \frac{9}{16} - 11 \frac{5}{16} = 3 \frac{4}{16} = 3 \frac{1}{4} [/tex]
d)
[tex]25 \frac{16}{27} - 11 \frac{13}{27} = 14 \frac{3}{27} = 14 \frac{1}{9} [/tex]
Myślę że pomogłem ;)
