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歡迎您訪問數學考題練習:-2與2m互為相反數,那么m等于!

數學考題練習:-2與2m互為相反數,那么m等于

更新時間:2024-01-12 16:43:17作者:貝語網校

-2與2m互為相反數,那么m等于

A.-1

B.1

C.

D.

試題答案

B

試題解析

讓-2與2m相加得0,列式求值即可.

解答:∵-2與2m互為相反數,

∴-2+2m=0,

解得m=1,

故選B.

點評:用到的知識點為:互為相反數的兩個數的和為0.

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