tìm ba số x;y;z biết x+y+z=350 và 6/7x=9/11y=2/3z
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)/2= (y+3)/4 =(z-5)/6 va 5z-3x-4y
tim x,y,z biet
a/ x:y:z = 5:3:4 va x+2y-z =-121
b/ 5x = 2y ; 3y = 5z va x+y+z = -970
c/ x/3 = y/12 = z/5 va x.y.z = 22,5
tim x y thuoc z biet 7x+11y=100
Tim cac so x,y,z biet x/y=9/7; y/2=7/3 va x-y+z=-15
bt1) TIM X,Y,Z biet:
a) x/y = 3/4 ; y/z = 5/7 va 2x + 3y - z = 186
b) 2x = 3y = 5z va /x+y-z/ = 95
Tim x,y,z, biet:
a)\(\frac{x}{5}=\frac{y}{6};\frac{y}{2}=\frac{z}{3}\)va \(x^3-2.x^2.y+z^3\)
b) \(2x=4y=5z\)va \(2x-3y-z=1\)
tim x,y,z biet 3x=4y=5z va x+y+z=-94
