Respuesta :

FLORC
51/4 ÷ 22/7
change ÷ to × and flip the second fraction
51/4 × 7/22
multiply
357/88 or 4.0568
the answer is not here

B is correct :

5 1/4 = 21/4

2 2/7=16/7

21/4x7/16=147/64=2 19/64