(K +1)/ 3 =(3K的1)/ 2-1
(3K的1)/ 2 - (k +1)的/ 3 = 1
(部9k +3-2的k-2)/ 6 = 1
(7K条1)/ 6 = 1
7K条+1 = 6
7K = 5
K = 5/7
A:当k = 5/7,符合条件.
(K +1)/ 3 =(3K的1)/ 2-1
(3K的1)/ 2 - (k +1)的/ 3 = 1
(部9k +3-2的k-2)/ 6 = 1
(7K条1)/ 6 = 1
7K条+1 = 6
7K = 5
K = 5/7
A:当k = 5/7,符合条件.