Question

Resolve y expresa el resultado como fracción irreducible. 1/2+5/7-1/42=. B)(5/4-5/9).36/5=. C). (7/12+5/24):19/3=.gracias

Answer 1

Respuesta:

A. $\frac{25}{21}$

B. $\frac{5}{1}$

C. $\frac{1}{8}$

Explicación paso a paso:

A.$\frac{1}{2}+\frac{5}{7}-\frac{1}{42}$

$\frac{1*21}{2*21}+\frac{5*6}{7*6}-\frac{1}{42}$

$\frac{21}{42}+\frac{30}{42}-\frac{1}{42}$

$\frac{21+30-1}{42}$

$\frac{50}{42}=\frac{25}{21}$

B. $(\frac{5}{4}-\frac{5}{9})*\frac{36}{5}$

$(\frac{5*9}{4*9}-\frac{5*4}{9*4})*\frac{36}{5}$

$(\frac{45}{36}-\frac{20}{36})*\frac{36}{5}$

$(\frac{45-20}{36})*\frac{36}{5}$

$\frac{25}{36}*\frac{36}{5}$

$\frac{25*36}{36*5}$

$\frac{900}{180}=\frac{100}{20}=\frac{20}{4}=\frac{5}{1}$

C. $(\frac{7}{12}+ \frac{5}{24} )/\frac{19}{3}$

$(\frac{7*2}{12*2}+ \frac{5}{24} )/\frac{19}{3}$

$(\frac{14}{24}+ \frac{5}{24} )/\frac{19}{3}$

$(\frac{14+5}{24})/\frac{19}{3}$

$\frac{19}{24}/\frac{19}{3}$

$\frac{19*3}{24*19}$

$\frac{57}{456}=\frac{19}{152}=\frac{1}{8}$