894*124-627分之267+123*894 急 急
问题描述：
894*124-627分之267+123*894 急 急
答
894*124-627分之267+123*894
=894*123+894-627分之267+123*894
=894*123+267分之267+123*894
=1
答
(267+123*894分之894*124-627)
=[(894*123+267)/894(123+1)-627]
=[(894*123+267)/894(123+1)-627]
=[(894*123+267)/(894*123+267)]
=1
答
有下列两种简算法：
(267+123×894 ) /(894×124-627)
=[894×(123+1)-894+267]/(894×124-627)
=[894×124-627]/(894×124-627)
=1
(267+123×894 ) /(894×124-627)
=(894×123+267 ) /[894×(124-1)+894-627]
=(894×123+267 ) /[894×123+267]
=1