Question

Calculati: 27 supra 5 - 13 supra 10 - 7 supra 15 - 1 supra 30=?.

Answer 1

Explicație pas cu pas:

$\frac{^{6)} 27}{5} - \frac{^{3)}13}{10} - \frac{^{2)}7}{15} - \frac{1}{30} = \frac{27 \times 6 - 13 \times 3 - 7 \times 2 - 1}{30} = \frac{162 - 39 - 14 - 1}{30} = \frac{162 - 54}{30} = \frac{108^{(6} }{30} = \frac{18}{5} = 3 \frac{3}{5}$