Question 11539
let us solve the numerator first:
Numerator =4(-3/5)-3(1/4)= -12/5 -3/4 =(-12x4-3x5)/20 = (-48-15)/20= -63/20
Denominator =[2(-3/5)]= -6/5 
Numerator/denominator =(-63/20)/(-6/5)=(-63/20)x(-5/6)=315/120=21/8