Solution Provider

What is ${7} \dfrac{3}{9} - {6}\dfrac{1}{2}$?
A. $\dfrac{15}{18}$
B. $ {1} \dfrac{15}{18}$
C. $ {2} \dfrac{15}{18}$
D. $ {4} \dfrac{15}{18}$
E. $ {3} \dfrac{15}{18}$