bai 1 tim cac so nguyen x,y biet
a,x/3=7/y b,x/y=-3/11 c,x/y-1=5/-19
bai 2 tim cac so nguyen x,y,z,t biet
12/-6=x/5=-y/3=z/-17=-t/-9
x/18=-98/y=-14/z=-t/102=u/-78
Tim so nguyen x,y,z,t,u
x/18=-98/y=-14/z=-t/102=u/-78
Tim cac so nguyen x,y,z,t,u
cho các so tu nhien x,y,z,t nho nhat thoa man x/y=5/14;y/z=21/28;z/t=6/11.tim x,y,z,t
cho tong A=(x+y+z)-(t+h)
trong do x,y,z,t,h la cac so nguyen khac nhau tu 1 den 2009.tim gia tri lon nhat va nho nhat
Biết x/y=z+t=y/z+t+x=z/t+x+y=t/x+y+z
Tính P=x+y/z+t +y+z/t+x +z+t/x+y +t+x/y+z
A = ( x+y)-(z+t)
B = ( x-z)+(y-t)
( A va B la hai so nguyen, so sanh A va B)
tìm x,y,z,t thuộc z biết z+y+z+t=1,x+y+z=2,y+z+t=3,z+t+x=4
tim cac so nguyen x,y,z biet y^2=y-1; x^2=x-1; z^2=z-1