已知x+4y+z=24,2x+7y=2z=41,求x+y+z
已知x+4y+z=24,2x+7y=2z=41,求x+y+z
已知2x+5y+4z=6.3x+y-7z=-4 求 x+2y+z
已知2x+5y+4z=6 3x+y-7z=-4求x+y-z
已知X、Y、Z满足2X-Y+4Z=8(1);X-2Y-Z=7(2)求X-Y-Z的值
已知x+4y+3z=3x-2y-5z=0,求x+2y-z/2x-3y+7z的值
已知x,y,z满足2x-y+4z=8,x-2y-z=7,求x-y+z的值.要2种方法
已知:X、Y、Z满足2X-Y+4Z=8,X-2Y-Z=7,求X-Y+Z的值
已知x,y,z满足2x-y+4z=8,x-2y-z=7,求x-y+z的值.
1 已知想x,y,z满足2x-y+4z=8,x-2y-z=7,求x-y+z的值
已知有理数x、y、z满足条件|x-z-2|+(3x-6y-7)^2+|3y+3z-4|=0,求x、y、z
已知x、y、z满足方程组:x+y-z=6;y+z-x=2;z+x-y=0 求x、y、z的值
1.已知x,y,z满足2│x-y│+(根号2y-z)+z平方-z+(1/4)=0,求x,y,z值.