6x²y+xy²-x²y-2x²y=3x²y+xy²y^4-5y^4+7y-6y^4=-10y^4+7y-4x-(-1/3)x+(-1/4)x=-4x+(1/3)x-(1/4)x=(-47/12)x8x³-(-5x³)+5-3x³=8x³+5x³+5-3x³=10x³+...