(784*322-213)/(321*784+571)的简便运算
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![(784*322-213)/(321*784+571)的简便运算](/uploads/image/z/1805288-32-8.jpg?t=%28784%2A322-213%29%2F%28321%2A784%2B571%29%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
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(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