Latex Coder 2

Posted byjaehwa
What is $\displaystyle {9}\frac{4}{7} - {5}\frac{3}{7}$?
A. $ {4}\dfrac{1}{7}$
B. $ {5}\dfrac{1}{7}$
C. $ \dfrac{1}{7}$
D. ${4}\dfrac{5}{7}$
E. $ {5}\dfrac{5}{7}$