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Rozwiązane

Str. 11 4) Oblicz:
KLASA 7
[tex] a) \: \frac{11}{12} - \frac{5}{12} [/tex]
[tex]b) \: 1 \frac{6}{7} - \frac{5}{7} [/tex]
[tex]c) \: 3 \frac{7}{9} - 1 \frac{5}{9} [/tex]
[tex]d) \: 2 \frac{4}{5} - 1 \frac{4}{5} [/tex]
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Odpowiedź :

MatmFizyk

Zad. 4/11

[tex]\frac{11}{12} - \frac{5}{12} = \frac{11\ - \ 5}{12} = \frac{6}{12} = \frac{1}{2}[/tex]

[tex]1\frac{6}{7} - \frac{5}{7} = 1\frac{6 \ - \ 5}{7} = 1 \frac{1}{7}[/tex]

[tex]3\frac{7}{9} - 1\frac{5}{9} = 3-1\frac{7\ -\ 5}{9} = 2\frac{2}{9}[/tex]

[tex]2\frac{4}{5} - 1\frac{4}{5} =2-1 \frac{4\ -\ 4}{5} = 1[/tex]