Các câu hỏi tương tự
tim ba so x,y,z biet
5x=8y=20z
va x-y-z=3
Tim x,y,z biet:2(x-1)-3(2x+2)-4(2x+3)=16
giai day du
Tim cac so nguyen x, y biet: x/4 - 1/y =1/2 ( giai chi tiet gium minh nha cac bn . Cam on nhiu!!!!!! )
Tim x,y,z
5x=8y=20z va x-2y+3z=12
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 :
a , x/5 = y/7 va x . y =140
b , x : y : z = 2 : 5 : 7 va 3x + 2y - z =27
Moi nguoi giup minh giai bai nay nha minh can gap
TIM CAC SO X;Y;Z BIET : 20X = 7Y ; 8Y = 5Z VA 2X + 5Y - 2Z = 100
Tim x,y,z biet
a,5x= 8y= 20z va x-y-z = 3
b,\(\frac{6}{11}x=\frac{9}{2}y=\frac{18}{5}z\)va -x+y+z =120
c,\(\frac{x}{12}=\frac{y}{9}=\frac{z}{5}\)va x . y . z =20
d,\(\frac{x}{5}=\frac{y}{7}=\frac{z}{3}\)va \(^{x^2+y^2-z^2}\)=585
Tim hai so huu ti x va y sao cho x+y =xy=x:y (y khac 0)
Cac ban giai de hieu mot chut nhe