Question

resolver 3/4+1/10-9/20=

Answer 1

$\frac{3}{4} + \frac{1}{10} - \frac{9}{20}$          mcm = 20

$\frac{15 + 2 - 9}{20}$

$\frac{17 - 9}{20}$

$\frac{8}{20}$

$\frac{2}{5}$