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-8x^2y^4*3x/4y^6/(-x^2y/6z)

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-8x^2y^4*3x/4y^6/(-x^2y/6z)
-8x^2y^4*3x/4y^6/(-x^2y/6z)
-8x^2y^4*3x/4y^6/(-x^2y/6z)
=-8x^2y^4*(3x/4y^6)*(-6z/x^2y)
=8*6x^2y^4*3x*6z/(4y^6*x^2y)
=144x^3y^4z/(4x^2y^7)
=36xz/y^3
①x+y+z=6 3x-y+2z=12 x-y-3z=-4 ②x+y-z=2 4x-2y+3y+8=0 x+3y-2z- 2X+Y+Z=10,X+2Y+Z=-6,X+Y+2Z=8 5X+4Y-3Y=13,2X-3Y+7Z=19,3X-Y=2X (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai 三元一次方程组2x+z=3 3x+y-z=8 x+3y+2z=3 5x+2y-3z=2 x+2y+z=6 7x-2y-4 1.x+y=16,y+z=12,z+x=102.3x-y+z=4,2x+3y-z=12,x+y+z=63.x+y+z=6 (x+2y-7z)^3+(3x-4y+6z)^3-(4x-2y-z)^3 因式分解 x+y+z=4 2x+3y-z=6 3x+2y+2z=10 2x-y+2z=-17 3x+y-3z=-4 x+y+z=6 2x+5y+4z=6,3x+y-7z=-4,x+y-z=? 已知2x+5y+4z=6 3x+y-7z=-4求x+y-z {2x+3y-4z=-5 x+y+z=6 x-y+3z=10 解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}