
怎么简算??
2个回答
展开全部
原式
=(361x549-1)/[(361+1)(549-1)-186]
=(361x549-1)/(361x549-361+549-1-186)
=(361x549-1)/(361x549-1)
=1
或者
(362+548×361)/(362×548-186)
=(362+548×361)/(361×548+548-186)
=(362+548×361)/(361×548+362)
=1
祝学习进步
=(361x549-1)/[(361+1)(549-1)-186]
=(361x549-1)/(361x549-361+549-1-186)
=(361x549-1)/(361x549-1)
=1
或者
(362+548×361)/(362×548-186)
=(362+548×361)/(361×548+548-186)
=(362+548×361)/(361×548+362)
=1
祝学习进步
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