Witam.
[tex]c) \: 3.9 + \frac{1}{25} = 3.9 + 0.04 = 3.94[/tex]
[tex]d) \: \frac{7}{8} - 0.15 = 0.875 - 0.15 = 0.76[/tex]
[tex]e) \: 3.6 + \frac{2}{3} = 3 \frac{6}{10} + \frac{2}{3} = 3 \frac{3}{5} + \frac{2}{3} = 3 \frac{9}{15} + \frac{10}{15} = 3 \frac{19}{15} = 4 \frac{4}{15} [/tex]
[tex]f) \: 2.27 + \frac{2}{7} = 2 \frac{27}{100} + \frac{2}{7} = 2 \frac{189}{700} + \frac{200}{700} = 2 \frac{389}{700} [/tex]
Pozdrawiam,
Michał
