(8x-3y)-(4x+3y-z)+2z过程- - 2-(1+x+x²-x²） 还没有答题的嘛速度 要不再给5分 最大极限了

(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? 化简-(-3x-y+2z)-{-x+【4x-(x-y-z)-3x+2z} (4x-2y-z)-{5x-[8y-2z-(x+y)]-2(3y-10z)}=?好难啊 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) 12x^2y^3z-8x^3y^2z+4x^2y 求化简(x+3y+2z)(x-3y+6z)(x+3y+4z-2z)(x-3y+4z+2z) 已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX.. X/10=Y/8=Z/9,则X+Y+Z/2Y-3Z 因式分解Z^2(x-y)-4(x-y)-3Z(y-z) 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 (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian x+y+z=-1 4x-2y+3z=5 y-z=8-2x 2x+3y+z=8 4x-y-z=10 x+2y-z=1 试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y) 2x-{3z-[3x-2(z-y)-(x+8y-6z)]}