2x+(38-x)=462x-x+38=46x+38=46 x=46-38x=8
2x+(38-x)=46解:2x+38-x=46 2x-x=46-38 x=8
解:2x+(38-x)=46 x=8
2x+(38-x)=462x+38-x=46x+38=46x=8
2x+(38-x)=462x+38-x=46x=46-38x=8