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
Bai 1 tim x,y,z bieta, frac{x}{1}frac{y}{2}frac{z}{3}va 4x-3y+2z36b, x:y:z3:5;(-2) va 5x-y+3z124c, 2x3y,5y7z va 3x-7y+5z-30Bai 2 tim ca so a1,a2,...a9 bietfrac{a1-1}{9}frac{a2-2}{8}frac{a3-3}{7}..........frac{a9-9}{1}va a1+a2+........+a990 luu y cho cac ban giai bai nay la lien quan den tinh chat cua day ti so bang nhau
Đọc tiếp
Bai 1 tim x,y,z biet
a, \(\frac{x}{1}\)=\(\frac{y}{2}\)=\(\frac{z}{3}\)va 4x-3y+2z=36
b, x:y:z=3:5;(-2) va 5x-y+3z=124
c, 2x=3y,5y=7z va 3x-7y+5z=-30
Bai 2 tim ca so a1,a2,...a9 biet
\(\frac{a1-1}{9}\)=\(\frac{a2-2}{8}\)=\(\frac{a3-3}{7}\)=..........\(\frac{a9-9}{1}\)va a1+a2+........+a9=90
luu y cho cac ban giai bai nay la lien quan den tinh chat cua day ti so bang nhau