-2x-y+3z的相反数

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-2x-y+3z的相反数-2x-y+3z的相反数-2x-y+3z的相反数-(-2x-y+3z)=2x+y-3z其相反数为-(-2x-y+3z)=2x+y-3z2X+Y-3Z

-2x-y+3z的相反数
-2x-y+3z的相反数

-2x-y+3z的相反数
-(-2x-y+3z)=2x+y-3z

其相反数为
-(-2x-y+3z)=2x+y-3z

2X+Y-3Z