(8x-3y)-(4x+3Y-z)+22怎样合并化简,

(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian 12x^2y^3z-8x^3y^2z+4x^2y (4x-2y-z)-{5x-[8y-2z-(x+y)]-2(3y-10z)}=?好难啊 化简-(-3x-y+2z)-{-x+【4x-(x-y-z)-3x+2z} x+2y=3x+2z=4y+z 求x:y:z x+y/2=z+x/3=y+z/4 x+y+z=27 数学--整式运算4(x-y+z)-2(x+y-z)-3(-x-y-z) 4x-y+z=25,6x-z+2y=22,x+3y+z=-2 {4x-y+z=25,6x-z+2y=22,x+3y+z=-2 蟹蟹 解方程:{x+y-3z=8,y+z-3x=4,z+x-3y=-12 解方程:{x+y-3z=-8,z+y-3x=-4,z+x-3y=12 解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8 解方程:{x+y-3z=8,y+z-3x=4,z+x-3y=-12 解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8 x:y:z=3:4:5 2x-3y+2z=8 x-y-2z=? 三元一次方程 X+Y+Z=6 2X+3Y-Z=4 3X-Y+Z=8 x+y+z=-1 4x-2y+3z=5 y-z=8-2x