a. $\dfrac35 + |-\dfrac53|-\dfrac{-1}2+\dfrac1{-4}$
$= \dfrac35 + \dfrac53 +\dfrac12 - \dfrac14$
$= \dfrac{36}{15}+ \dfrac{1}{4}$
$= \dfrac{53}{20}$
b. $\dfrac35 + |-\dfrac52|+\dfrac{-1}4+\dfrac18$
$= \dfrac35+\dfrac52 + \dfrac{-1}4+\dfrac18$
$= \dfrac{31}{15}-\dfrac18$
$= \dfrac{233}{120}$
f. $2\dfrac13 - \dfrac{-5}{6}+1-\dfrac{5}{12}-|\dfrac{-7}{2}|$
$= \dfrac73+\dfrac56+1-\dfrac{5}{12}-\dfrac72$
$= \dfrac{33}{12}-\dfrac52$
$= \dfrac{1}{4}$
g. $1\dfrac35 - |\dfrac1{-4}|+\dfrac{2}{-3}+|-\dfrac12|$
$= \dfrac85-\dfrac14-\dfrac32+\dfrac12$
$= \dfrac85-\dfrac54$
$= \dfrac{-9}{20}$
d và e thì tương tự f và g