A 9/2 * b 1/12 : (a -19/4 * b 1/3)

Question

A 9/2 * b 1/12 : (a -19/4 * b 1/3)

Answer 1

...= ab* 9/24 : (12a - 19b)/12= 12*9ab/((12a-19b)24)= 9ab/(2(12a-19b))=9ab/(24a-38b)