= \(\dfrac{5}{12}\) + \(\dfrac{1}{3}\)
= \(\dfrac{5}{12}\) + \(\dfrac{4}{12}\)
= \(\dfrac{9}{12}\)
= \(\dfrac{3}{4}\)
\(\dfrac{12}{12}\times\dfrac{5}{12}+\dfrac{3}{3}\times\dfrac{1}{3}=\dfrac{12\times5}{12\times12}+\dfrac{3\times1}{3\times3}=\dfrac{60}{144}+\dfrac{3}{9}=\dfrac{5}{12}+\dfrac{3}{9}=\dfrac{5\times9+3\times12}{108}=\dfrac{45+36}{108}=\dfrac{81}{108}=\dfrac{3}{4}\)