Question

1)Calculati : 1 supra 5 + 7 supra 36 - 1 supra 48

Answer 1

$\frac{1}{5} + \frac{7}{36} + \frac{1}{48} = \\ \frac{144}{720} + \frac{140}{720} + \frac{15}{720} = \\ \frac{299}{720}$