(3/4×0.75+3/4×0.25)÷6/7(简算)

问题描述:

(3/4×0.75+3/4×0.25)÷6/7(简算)

(3/4×0.75+3/4×0.25)÷6/7
=3/4x(0.75+0.25)x7/6
=3/4x7/6
=7/8