作业帮(784*322-213)/(321*784+571)的简便运算
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/12 04:48:00
(784*322-213)/(321*784+571)的简便运算
(784*322-213)/(321*784+571)的简便运算
(784*322-213)/(321*784+571)的简便运算
(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)
=[784*(321+1)-213]/(321*784+571)
=(784*321+784*1-213)/(321*784+571)
=(321*784+571)/(321*784+571)
=1
=(784+784*321-213)/(321*784+571)=(784*321+571)/(321*784+571)=1