3/8乘6/7+6/7除以8等于

问题描述:

3/8乘6/7+6/7除以8等于

3/8×6/7+6/7÷8
=3/8×6/7+6/7×1/8
=6/7×(3/8+1/8)
=6/7×1/2
=3/7