若X/3=Y/4=Z/7,则3X+Y+Z/Y的值为
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
若4x=7y+5z,2x+y=z,则x:y:z的值为
若x:y:z=3:5:7,3x+2y-4z=9,则x+y+z的值为( )
若实数x,y,z满足x+y/1=4,y+z/1=1,z+x/1=3/7,则xyz的值为多少
若2x+5y-4z=0,3x+9y-7z=0,则x+y-z的值为
C语言:int x=5,y=7,z; z=x>y?5>3?++x+y:x:++x-y++ 则z的值为________.
已知4x-3y-6z=0,x+2y-7z=0,且x、y、z都不为0,求(3x+2y+z)/(x+2y+3z)的值 快帮求
已知4x-3y-6z=0 ① ,x+2y-7z=0 ②,且x,y,z均不为0,求3x+2y+z÷x+2y+3z的值
若5分之x=4分之y=3分之z(z不等于0),则3x-2y分之x+y+z的值为
若x+2y+3z=10,4x+3y+2z=15,则x+y+z的值为( )
5,若x+2y+3z=10,4x+3y+2z=15,则x+y+z的值为( )
已知2x+5y+4z=15,7x+y+3z=14,则4x+y+2z的值为______.