云南省2019年中考数学总复习第二单元方程(组)与不等式(组)第05课时一次方程(组)及其应用课件.ppt

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第 5 课时 一次方程(组)及其应用,UNIT TWO,第二单元 方程(组)与不等式(组),考点一 等式的性质,考点聚焦,考点二 方程(组)的概念及其解,等式,未知数的值,考点三 一元一次方程及其解法,一,1,最小公倍数,符号,系数,考点四 二元一次方程组及其解法,两,1,代入消元法,加减消元法,考点五 方程(组)的概念及其解,工作时间,速度,进价,利润率,数量,2.一次方程应用的常见类型,对点演练,A,8,B,B,探究一 一次方程(组)的解法,针对训练,探究二 一次方程(组)的应用,针对训练,A,(2)全部售完500箱矿泉水,该商场共获得利润多少元?,(2)全部售完500箱矿泉水,该商场共获得利润:300(36-24)+200(48-33)=6600(元).,B,A,

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