a) $\dfrac{19}{24}$ - $\dfrac{3}{8}$ = $\dfrac{19}{24}$ - $\dfrac{9}{24}$ = $\dfrac{10}{24}$ = $\dfrac{5}{12}$
b) $\dfrac{17}{14}$ - $\dfrac{5}{7}$ = $\dfrac{17}{14}$ - $\dfrac{10}{14}$ = $\dfrac{7}{14}$ = $\dfrac{1}{2}$
c) $\dfrac{11}{15}$ + $\dfrac{6}{9}$ = $\dfrac{33}{45}$ + $\dfrac{30}{45}$ = $\dfrac{63}{45}$=$\dfrac{7}{5}$
d) $\dfrac{13}{6}$ + $\dfrac{7}{32}$ = $\dfrac{208}{96}$ + $\dfrac{21}{96}$ = $\dfrac{229}{96}$
~ HT ~
