当x;y;z=1;3;5时,x+3y-z除以x-3y+z等于多少?

当x;y;z=1;3;5时,x+3y-z除以x-3y+z等于多少? C语言if语句和if… else语句技巧当x=3,y=4,z=5时,xyz值分别为多少.1.if（x>z）{x=y;y=z;z=x;} else{x=z;z=y;y=x} x,y,z值 2..if（x>z) x=z; else x=z;z=y;y=x ; x,y,z值 3.if（x!>z) x=z; else x=z;z=y;y=x ; x,y,z值 各自有什么区别? 已知x+y=3,当y+z=4,x+z=5,则x+y+z等于() 当x,y,z>0时x+2y+3z=1u=x*x/(x+1)+4y*ysup2/(2y+1)+9z*z/(3z+1)的最小值 {x+y+z=1;x+3y+7z=-1;z+5y+8z=-2 x+y-z=3 y+z-x=5 z+x-y=7 求x,y,z 已知x/y+z=y/x+z=z/x+y,分式(x+2y+3z)/(2x+5y-2c)有意义时的值 x/2=y/3=z/5 x+3y-z/x-3y+z 方程组 (1) x+2y-3z=12 x-3y+2z= - 13 x-y-z=0 (2) x+ y=z 5x-y+z=18 2x+5y+3z= -1 x+Y+Z=1 X+3Y+7Z=-1 X+5Y+8Z=2x+Y+Z=1X+3Y+7Z=-1X+5Y+8Z=2 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX.. x+y+z=6 x+2y+3z=14 y+1=z {x+y+z=1 x-2y+3z=5 2x-3y-3z=-8 2x-y+3z=3 {3X+Y-2Z=-1 X+Y+Z=5 x+y+z=-5,3x+y+z=1,4x+3y+2z=-2快 3x+2y+z=14 ,x+y+z=10,z+2x+3y=1 5