Vì 14 ⋮ 2 => 2x + 3y ⋮ 2
Mà 2x ⋮ 2 => 3y ⋮ 2
Mà ( 2; 3) = 1 => y ⋮ 2
2x + 3y = 14 => 3y ≤ 14
=> y ≤ 14 / 3 => y ≤ 4 => y = 2 ; 4
Với y = 2 <=> 2x + 6 = 14 => 2x = 8 => x = 4
Với y = 4 <=> 2x + 12 = 14 => 2x = 2 => x = 1
Vậy ( x;y ) = { ( 4;2 ) ; ( 1 ; 4 ) }
tim cac so nguyen duong x,y,z thoa man x^2+y^3+z^4
tim cac so nguyen duong x y thoa man \(\frac{x}{2}+\frac{x}{y}-\frac{3}{2}=\frac{10}{y}\)
so cac so nguyen x thoa man 15-|-2x+3|*|5+4x|=19 tim so cac so nguyen x giup minh nhe
!
tim tat ca cac so nguyen duong co dang abcde thoa man abc-de chia het cho 101
cho (xo;yo) la cac so nguyen duong thoa man : (x - 2) (2x + 3)=26
khi do xo + yo =
tim cac so nguyen to x,y thoa man 272x= 11^y + 29
tim cac so nguyen to x,y thoa man:(x -2) nhan (y-3)=-4
cho cac so nguyen duong a,b,x,y thoa man a+b=x+y;ab+a=xy.cmr:x=y
Tim cac so nguyen x,y thoa man : xy+3x-y=8
