Question

efectua las siguientes operaciones​

Answer 1

Explicación paso a paso:

¡Buenas!

A )  

$\left(-\dfrac{15}{23}\right)+\left(-\dfrac{19}{23}\right)$

$=-\dfrac{15}{23}-\dfrac{19}{23}$

$=\dfrac{-15-19}{23}$

$=\dfrac{-34}{23}$

$=-\dfrac{34}{23}$

B )

$\left(\\\dfrac{3}{4}+\dfrac{5}{3}\right)+\left(7+\dfrac{1}{5}\right)$

$=\dfrac{29}{12}+\left(7+\dfrac{1}{5}\right)$

$=\dfrac{29}{12}+\dfrac{36}{5}$

$=\dfrac{577}{60}$

FRACCION MIXTA

$=9\dfrac{37}{60}$

C )

$\left(-\dfrac{2}{5}+4\right)-\left(-\dfrac{1}{3}+1\right)$

$=\dfrac{18}{5}-\left(-\dfrac{1}{3}+1\right)$

$=\dfrac{18}{5}-\dfrac{2}{3}$

$=\dfrac{44}{15}$

FRACCION MIXTA

$=2\dfrac{14}{15}$

D )

$\left(-\dfrac{3}{4}+\dfrac{5}{3}\right)-\left(\dfrac{5}{3}-\dfrac{3}{2}\right)$

$=\dfrac{11}{12}-\left(\dfrac{5}{3}-\dfrac{3}{2}\right)$

$=\dfrac{11}{12}-\dfrac{1}{6}$

$=\dfrac{3}{4}$

¡Saludos!