3/4×1/9+1/4÷9
=3/4×1/9+1/4×1/9
=(3/4+1/4)×1/9
=1×1/9
=1/9
5/11×0.125-4/11÷8
=5/11×1/8-4/11×1/8
=(5/11-4/11)×1/8
=1/11×1/8
=1/88
3/4×1/9+1/4÷9
=3/4×1/9+1/4×1/9
=(3/4+1/4)×1/9
=1×1/9
=1/9
5/11×0.125-4/11÷8
=5/11×1/8-4/11×1/8
=(5/11-4/11)×1/8
=1/11×1/8
=1/88