(784322-213)/(321784+571)的简便运算

分类: 作业答案 • 2022-02-21 14:30:21

问题描述：

(784*322-213)/(321*784+571)的简便运算

答

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

答

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

答

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

(784*322-213)/(321*784+571)的简便运算