(7/8-5/6)÷(7/12-1/4)简便算和10/27÷[7/8-(17/27-1/8)]简便算

问题描述:

(7/8-5/6)÷(7/12-1/4)简便算和10/27÷[7/8-(17/27-1/8)]简便算

(7/8-5/6)÷(7/12-1/4)
=(7/8×24-5/6×24)÷(7/12×24-1/4×24)
=(21-20)÷(14-6)
=1/8
10/27÷[7/8-(17/27-1/8)]
=10/27÷[7/8-17/27+1/8]
=10/27÷[1-17/27]
=10/27÷10/27
=13/5×3/4÷3/5的简便算呢?谢谢3/5×3/4÷3/5=3/5÷3/5×3/4=3/4