tim cac cap so nguyen x , y thoa man : 2 . ( xy - 3 ) = x
tim cap so nguyen (x,y) thoa man 8x+13y-xy
tim cap so nguyen x,y thoa man: |x+4|+|y-2|=3
tim cap so nguyen (x;y) thoa man : |x+2| + (y+2)2 = 3 - |x+1|
tim tat ca cac cap so nguyen x,y thoa man 2^x+1.3^y=12^x
tim so cap gia tri x , y nguyen thoa man |x|+|y|=4
tim cap so nguyen (x, y)thoa man 2y2= 5-/x-1/
so cap (x,y) nguyen thoa man (y+1)(xy-1) =3
tim cac cap so nguyen (x;y) thoa man
3x2y -x + 6xy -5 =0
