Odpowiedź:
Zadanie 1
a)
[tex] \frac{1}{2} + \frac{1}{4} = \frac{3}{4} [/tex]
[tex] \frac{3}{4} - \frac{1}{2} = \frac{1}{4} [/tex]
b)
[tex] \frac{15}{4} [/tex]
[tex] \frac{9}{4} [/tex]
[tex]8 \frac{1}{4} [/tex]
[tex]9 \frac{3}{4} [/tex]
Zadanie 2
[tex] \frac{1}{4} + \frac{5}{8} = \frac{2}{8} + \frac{5}{8} = \frac{7}{8} [/tex]
[tex] \frac{5}{6} - \frac{2}{3} = \frac{5}{6} - \frac{4}{6} = \frac{1}{6} [/tex]
Zadanie 3
[tex] \frac{7}{10} [/tex]
[tex] = \frac{4}{6} + \frac{1}{6} = \frac{5}{6} [/tex]
[tex]5 + \frac{11}{12} = 5 \frac{11}{12} [/tex]
[tex] \frac{8 - 3}{10} = \frac{5}{10} = \frac{1}{2} [/tex]
[tex] = \frac{24 - 8}{9} = \frac{16}{9} = 1 \frac{7}{9} [/tex]
[tex] = \frac{5}{2} - \frac{1}{4} = \frac{9}{4} [/tex]
Zadanie 4
[tex] = \frac{3}{6} + \frac{2}{6} = \frac{5}{6} [/tex]
[tex] = \frac{9}{12} - \frac{8}{12} = \frac{1}{12} [/tex]
