18的5/6除以5.6与0.4的和,商是多少?1/2与1/3的和除以它们的差,商是多少?

问题描述:

18的5/6除以5.6与0.4的和,商是多少?1/2与1/3的和除以它们的差,商是多少?

18的5/6除以5.6与0.4的和,商是多少?
答:18X (5/6 ) ÷ (5.6-0.4)=2又(23/26)

1/2与1/3的和除以它们的差,商是多少?
答: (1/2+1/3) ÷ (1/2-1/3) =5

商是2.5
商是5

(18 *5/6)/(5.6+0.4)=15/6=2.5
(1/2 +1/3)/(1/2 -1/3)
=(5/6 )/(1/6)
=5