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Obliczenia
[tex]2\frac{2}{9}+1\frac{5}{12}-\frac{7}{8}=2\frac{2\cdot8}{9\cdot8}+1\frac{5\cdot6}{12\cdot6}-\frac{7\cdot9}{8\cdot9}=\\\\=2\frac{16}{72}+1\frac{30}{72}-\frac{63}{72}=3\frac{46}{72}-\frac{63}{72}=\\\\=2\frac{118}{72}-\frac{63}{72}=2\frac{55}{72}[/tex]
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