已知|x-y+4|+(y-3)2=0,则2x+y=______.
已知(x+y+2)2+|2x-3y-1|=0,则x+y=______.
已知2x+3y=5,则6x-4y-2(x-5y)=______.
已知|x-3|+(y+2)2=0,则x+y=______.
已知(x-3)2+|2x-3y+6|=0,则x=______,y=______.
若3x-4y=0,则x/y=______,(x-y)/y=______,(3x+2y)/(2x+3y)=_____.
已知|x-3|+|y+1|=0,则3x-2y=______.
已知:(2x+3y-4)2+|x+3y-7|=0,则xy=______.
已知|2x-4|+|3x+2y+2|=0,则x-y=______.
已知|x+3|+(x+2y-1)2=0,则x+y=______.
已知集合M={(x,y)|y=x+3},N={(x,y)|y=-2x+6},则M∩N=______.
已知集合M={(x,y)|x+y=2},N={(x,y)|x-y=4},则M∩N等于______.
已知正实数x,y满足xy+2x+y=4,则x+y的最小值为______.