将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:( )

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将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:()将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:()将2(x+y)-3(x-

将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:( )
将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:( )

将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:( )
将2(x+y)-3(x-y)-4(x+y)+5(x-y)-3(x-y)合并同类项得:-2(x+y)-(x-y)
也可继续化为:-3x-y