267+123*894分之894*124-627÷{2003*0.4分之2005*0.5+1.6/2005}
简便运算!?急急急急速度267+123*894/894*124-627÷{2003*0.4/2005*0.5+1.6/2005...
简便运算!?急急急急速度
267+123*894/894*124-627÷{2003*0.4/2005*0.5+1.6/2005 展开
267+123*894/894*124-627÷{2003*0.4/2005*0.5+1.6/2005 展开
展开全部
(267+123*894分之894*124-627)÷{2003*0.4分之2005*0.5+1.6/2005}
=[(894*123+267)/894(123+1)-627]÷[2003*0.4/2005*0.5+1.6/2005]
=[(894*123+267)/894(123+1)-627]÷[2003*4/2005*5+1.6/2005]
=[(894*123+267)/(894*123+267)]÷[2003*4/2005*5+1.6*5/2005*5]
=1÷[(2005-2)*4+8]/2005*5
=2005*5/(2005*4-8+8)
=2005*5/2005*4
=5/4
=[(894*123+267)/894(123+1)-627]÷[2003*0.4/2005*0.5+1.6/2005]
=[(894*123+267)/894(123+1)-627]÷[2003*4/2005*5+1.6/2005]
=[(894*123+267)/(894*123+267)]÷[2003*4/2005*5+1.6*5/2005*5]
=1÷[(2005-2)*4+8]/2005*5
=2005*5/(2005*4-8+8)
=2005*5/2005*4
=5/4
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