(784*322-213)/(321*784+571)的简便运算_数学解答

(784*322-213)/(321*784+571)的简便运算

人气：355 ℃　时间：2020-05-18 11:22:45

解答

(784*322-213)/(321*784+571)
=(784*321+784-213)/(321*784+571)
=(321*784+571)/(321*784+571)
=1