若|x-9|+|y-10|+|z+2|=0,求x+y+z除以2的值

若X/10=Y/8=Z/9则X+Y+Z/Y+Z=? X/10=Y/8=Z/9,则X+Y+Z/2Y-3Z 方程组3x+y+2z=10,2x+3y-z=9,x+y+z=6 三元一次方程组,1.x-2y+z=9 2x+y+3z=10 3x+2y1.x-2y+z=92x+y+3z=103x+2y-z2.3x-5y+2z=14x+5y-z=5X-5y+3z=-23.7x+2y-z=76x-y+z=74x+3y+z=94.4x+3y-2z=-75x-6y+z=12x+z=-25.2x+3y-4z=-23x-2y+5z=262x+5z=31 若{x+3y+10z=0 则 (x+y-z)/(x-y+z){2x-y-2z=0 解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 若整数x、y、z满足（9/8）^x×(9/10)^y×(16/15)^z=2 ,则x=____ y=____ z=___ 若x、y、z、满足（9/8）^x ×（10/9）^y×（16/5）^z=2,则x、y、z、的值为多少 初中数学题难题一道~若整数x、y、z满足(9/8)^x×(10/9)^y×(16/15)^z=2,求x、y、z的值. 若x+y+z=3y=2z,则x/x+y+z=? 若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)= 若x除以10=y除以8=z除以9,则x+y+z除以y+z x/10 = y/8 =z/9 求x+2y+3z/y-5z 已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX.. 若整数X Y Z满足(9/8)^X*(10/9)^Y*(16/15)^Z=2则x=__,y__,z=__. 若|x-9|+|y-10|+|z+2|=0,求x+y+z除以2的值 若x+2y+3z=9,求正整数x,y,z. 若X+2y+3z=9求正整数X,y,z要有详细过程