Respuesta :
the answer is 36. because 12x3=36, 9x4=36, and 4x9=36, so it is the least common denominator
The whole pizza needs to be 36 slices.
LCM of 4, 9, 12 = 36
Andrew gets 9 slices
Brice gets 8 slices
and Collins gets 15 slices