(+5 1/4)*(-2 2/2)-(-4 2/10):(3 2/5)+(-6/7)*(-2 1/3)*(-3 1/4)

5 1/4*(-2 2/2)=21/4*3=63/4-4 2/10:(3 2/5)=-42/10*5/17=-42/34(-6/7)*(-2 1/3)=(-6/7)*(-7/3)=22*(-3 1/4)=2*(-13/4)=-13/263/4-(-42/34)=1071/68+84/68=1155/681155/68+(-13/2)=1155/68-442/68=713/68=10 33/68