亚洲男人天堂av,国产一区二区久久精品,国产精品一区二区久久精品,国产精品久久久久久一区二区三区,五月婷婷在线观看视频,亚洲狠狠色丁香婷婷综合

歡迎您訪問每日一練:下列說法中,正確的是!

每日一練:下列說法中,正確的是

更新時間:2024-01-12 12:55:09作者:貝語網校

下列說法中,正確的是

A.在等式2x=2a-b的兩邊都除以2,得到x=a-b

B.等式兩邊都除以同一個數,等式一定成立

C.等式兩邊都加上同一個整式,所得結果仍是等式

D.等式4x=8的兩邊都減去4,得到x=4

試題答案

C

試題解析

利用等式的性質1、2對每個選項進行判斷即可找出答案.

解答:A、根據等式性質2,在等式2x=2a-b的兩邊都除以2,得到x=a-;

B、根據等式性質2,等式兩邊都除以同一個不為0的數,所得結果仍是等式;

C、根據等式性質1,等式兩邊都加上同一個整式,所得結果仍是等式;

D、根據等式性質1,等式4x=8的兩邊都減去4,得到4x-4=4.

綜上所述,故選C.

點評:主要考查了等式的基本性質.

等式的性質1:等式的兩邊都加上或者減去同一個數或同一個整式,所得結果仍是等式;

等式的性質2:等式的兩邊都乘以或者除以同一個數(除數不為零),所得結果仍是等式.

為您推薦

加載中...
主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |