Question

realiza operaciones en r
  1/4+3/8-1/20
con operacion porfa

Answer 1

$\frac{1}{4} + \frac{3}{8} - \frac{1}{20} = \frac{10+15-2}{40} = \frac{23}{40}$

Answer 2

$\frac{1}{4} + \frac{3}{8} - \frac{1}{20} = \frac{2}{8}+ \frac{3}{8}- \frac{1}{20} = \frac{5}{8}- \frac{1}{20} = \frac{100-8}{160}= \frac{92}{160} = \frac{46}{80}= \frac{23}{40}$

Listo