Question

(3-1/3) - (3/4-3/5) + (1/10-7/20

Answer 1

$Resolver:$

$( \frac{3}{1} - \frac{1}{3}) - ( \frac{3}{4} - \frac{3}{5}) + ( \frac{1}{10} - \frac{7}{20})$

$( \frac{(9-1}{3}) - ( \frac{(3)(5)-(4)(3)}{4*5}) + ( \frac{2-7}{20})$

$\frac{8}{3} - \frac{15-12}{20} + \frac{5}{20}$

$\frac{8}{3} - \frac{3}{20} + \frac{5}{20}$

$\frac{8}{3} - \frac{3+5}{20}$

$\frac{8}{3} - \frac{8}{20}$

$\frac{(8)(20)-(3)(8)}{3*20}$

$\frac{160-24}{120}$

$\frac{136}{120}$

$Simplificamos:$

$\frac{136:2}{120:2}$

$\frac{68:2}{60:2}$

$\frac{34:2}{30:2}$

$\frac{17}{15}$ <==== respuesta