2/11+3/4+(3/11)/(4/3)+(6/11)×75%
=2/11+3/4+(3/11)×(3/4)+(6/11)×(3/4)
=2/11+3/4+(3/11+6/11)*(3/4)
=2/11+(1+3/11+6/11)*(3/4)
=2/11+(20/11)*(3/4)
=2/11+(2/11)*(3/2)
=(2/11)*(1+3/2)
=5/11
或
2/11+3/4+(3/11)/(4/3)+(6/11)×75%
=2/11×3/4+3/11×3/4+6/11×3/4
=3/4×(2/11+3/11+6/11)
=3/4×1
=3/4