(5.456+6又8/13+3.544-1又8/13)/(2又3/8+5-0.375)×1/7
问题描述:
(5.456+6又8/13+3.544-1又8/13)/(2又3/8+5-0.375)×1/7
答
由(5.456+6又8/13+3.544-1又8/13)/(2又3/8+5-0.375)×1/7
=(9+5)/7×(1/7)
=2/7.