14 supra 30 - 6 supra 15 + 4 supra 12

Răspuns :

Răspuns:

Explicație pas cu pas:

[tex] \it{ \frac{14 {}^{(2} }{30} - \frac{6}{15} + \frac{4 {}^{(4} }{12} = \frac{7}{15} - \frac{6}{15} + \frac{1}{3} = \frac{1}{15} + \frac{ {}^{5)} 1}{3} = \frac{1}{15} + \frac{5}{15} = \frac{6 {}^{(3} }{15} = \frac{2}{5} } \\ [/tex]

[tex] \frac{14}{30} - \frac{6}{15} + \frac{4}{12} = [/tex]

[tex] \frac{28}{60} - \frac{24}{60} + \frac{20}{60} = \frac{4}{60} + \frac{20}{60} = \frac{1}{15} + \frac{1}{3} = \frac{1}{15} + \frac{5}{15} = \frac{6}{15} = 0.4[/tex]