Các câu hỏi tương tự
tim x,y,z biet :
x^3/8=y^3/64=z^3/216 va x^2+y^2+z^2=14
Tim x,y,z biet:
(2|x|+5)/3=(3|y|-1)/5=(3-z)/7 va 2|x|+7|y|+3z=-14
Tim cac so x,y,z biet x/y=9/7; y/2=7/3 va x-y+z=-15
Tim x+y+z = ? biet (x-1) /2= (y-2) /3 = (z-3) /4 va 2x+3y-z=95
tim cac so x,y,z biet x -1 phan 2 bang y cong 3 phan 4 bang z-5 phan 6 va 5z - 5x - 4y bang 50
Tim x,y,z biet:
x+1/ 3 = y+2/ 4 = z+3/ 5 va x+y+z= 18
tim cac so x,y,z ,biet x/2=y/4=z/6 va x-y+z
Tim cac so x,y,z biet \(\frac{x}{5}=\frac{y}{7}=\frac{z}{3}\)va x2 va y2 va z2
Tim x biet :
a) x-1/2=y-2/3=z-3/4 va 2/x+3/y-z