Zapisz w jak najproszczej postaci
a)(x+4)+(2x-6)
b)-(2y+3x)+(-4y+2x+1)
c)-(x-2xy)-(4x+xy)+(xy-x)
a)(x+4)+(2x-6)=x+4+2x-6=3x-2
b)-(2y+3x)+(-4y+2x+1)=-2y-3x-4y+2x+1=-6y-x+1
c)-(x-2xy)-(4x+xy)+(xy-x)=-x+2xy-4x-xy+xy-x=-6x+2xy
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a)(x+4)+(2x-6)=x+4+2x-6=3x-2
b)-(2y+3x)+(-4y+2x+1)=-2y-3x-4y+2x+1=-6y-x+1
c)-(x-2xy)-(4x+xy)+(xy-x)=-x+2xy-4x-xy+xy-x=-6x+2xy