化简:4x-{3x-[6x-3(2y-z)+z-3(2x-3y+z)]}=( )

化简-(-3x-y+2z)-{-x+【4x-(x-y-z)-3x+2z} 化简:4x-{3x-[6x-3(2y-z)+z-3(2x-3y+z)]}=( ) 求化简(x+3y+2z)(x-3y+6z)(x+3y+4z-2z)(x-3y+4z+2z) 2(x+y-z)-3(x-y+z)-5(x+y-z)+6(x-y+z) 计算 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) 化简 -（3x-2y-z)-2[4x-3(x-2y-3z)-2] 三元一次方程x+y+z=0 4x+2y+z=3 9x+3y+z=6x+y+z=04x+2y+z=3 9x+3y+z=6 三元一次方程组,1.x-2y+z=9 2x+y+3z=10 3x+2y1.x-2y+z=92x+y+3z=103x+2y-z2.3x-5y+2z=14x+5y-z=5X-5y+3z=-23.7x+2y-z=76x-y+z=74x+3y+z=94.4x+3y-2z=-75x-6y+z=12x+z=-25.2x+3y-4z=-23x-2y+5z=262x+5z=31 (x+2y-7z)^3+(3x-4y+6z)^3-(4x-2y-z)^3 因式分解 2x-y+2z=6 3x+y-3z=-4 x+y+z=6 1.{x:y:z=3:4:5 2x+3y-5z=-142.{x-y-z=-1 3x+5y+7z=11 4x-y+2z=-13.{x+y=1 x+z=0 2x+y+2z=44.{x-y+z=-3 2x-y-z=-2 -3x+y+z=-15.{x-y+z=-3 3x+y-4z=6 2x+y-z=36.{x-2y+5z=16 2x+y-5z=7 2x-y+z=38 x+y+z=4 2x+3y-z=6 3x+2y+2z=10 x+y-z=6 x-3y+2z=1 3x+2y-z=4 阿 x+y-z=6,x-3y+2z=1,3x+2y-z=4 X+y-z=6;x-3y+2z=0;3x+2y-z=4 x+y-z=6 x-3y+2z=1 3x+2y-z=4