\(\dfrac{3}{2}:\dfrac{8}{4}+\dfrac{21}{48}\text{=}\dfrac{3}{2}:2+\dfrac{21}{48}\)
\(\text{=}\dfrac{3}{4}+\dfrac{21}{48}\text{=}\dfrac{36}{48}+\dfrac{21}{48}\text{=}\dfrac{57}{48}\)
3/2 : 8/4 + 21/48
= 12/16 + 21/48
= 57/48
\(\dfrac{3}{2}:\dfrac{8}{4}+\dfrac{21}{48}\\ =\dfrac{3}{2}:2+\dfrac{21}{48}\\ =\dfrac{3}{4}+\dfrac{21}{48}\\ =\dfrac{19}{16}\)