若{x+2y-4z=0}与｛3x+y-z=0｝的解相同,则x:y:z=[ ? ]注：做对了,加★☆100☆★

若{x+3y+10z=0 则 (x+y-z)/(x-y+z) 已知方程4x+3y-6z=0与方程x+3y-3z=0有相同的解,求x:y:z 若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值 2x+3y-4z=0.,3x+4y+5z=0,则x+y+z/x-y+z详细的解题过程 若x-2y+4z=1,x+3y-7z=0,则y:z=? 若xy-z不等于0,且(y+x)/x=(z+x)/y=(y+x)/z,求[(y+z)(z+x)(x+y)]/xyz的值? x-3y+z=0,3x-2y-4z=0,则x:y:z=多少? 2x+5y+4z=0,3x+y-7z=0,则x+y-z=? x+2y-4z=0 3x+y-z=0,则x:y:z= x+2y-4z=0,3x+y-z=0,则x:y:z=?：： 已知{x-3y+2z=0 3x-3y-4z+0,则x:y:z=? 已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z