Question

как решить : 3/4+4/5+1/20

Answer 1

$\frac{3}{4} + \frac{4}{5} + \frac{1}{20} = \frac{3 \times 5 + 4 \times 4 + 1 \times 1}{20} =$

$\frac{15 + 16 + 1}{20} = \frac{32}{20} = \frac{8}{5} = 1 \frac{3}{5}$