一道分式化简题=(X+Y+Z)+3/(X+Y+Z)=3这样对吗
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz
一道数学题:若x:y:z=2:3:4,求分式x-y-z /2x+3y的值
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
x/2=y/3=z/5 x+3y-z/x-3y+z
若{x+3y+10z=0 则 (x+y-z)/(x-y+z)
已知:(x+y)/z=(x+z)/y=(z+y)/x,且xyz不等于0,则分式(x+y)(x+z)(z+x)/xyz的值
代数式的恒等变形3已知(x+y+-z)/z=(x-y+z)/y=(-x+y+z)/x且xyz不等于0求分式(x+y)(y
.已知 x\2 = y\3 = z\5 ,则分式 2x+3y–z\3x-2y+z =___________
已知x/2=y/3=z/-1≠0,求分式2x+6y-3z/x+y+2z的值
试一试:已知X/3=Y/4=Z/6不等于0,求分式X+Y-Z/X-Y+Z的值
已知X/2=y/3=z/4,试求x+y-z/x+y+z的值 (这是初二分式) 要过程
x+y+z=0,2x-y-7z=0,求分式3xy-4z的平方除以x的平方-y的平方