(382x498-116)/(382+498x381)
=(381x498+498-116)/(382+498x381)
=(381x498+498-116)/(382+498x381)
=(381x498+382)/(382+498x381)
=1
这样可以么?
(382x498-116)/(382+498x381)
=(381x498+498-116)/(382+498x381)
=(381x498+498-116)/(382+498x381)
=(381x498+382)/(382+498x381)
=1
这样可以么?