3xy + x = 2y
<=> 3xy - 2y + x = 0
<=> 6(3xy - 2y + x) = 0
<=> 18xy - 12y + 6x = 0
<=> 6y(3x - 2) + 6x - 4 = - 4
<=> 6y(3y - 2) + 2(3y - 2) = - 4
<=> (6y + 2)(3y - 2) = - 4
=> (6y + 2)(3y - 2) = - 1.4 = - 2.2 = 1.(-4)
Tự liệt kê ra nhá , mỏi tay lắm
tim so nguyen x, y thoa man : 3.x.y + x =2.y
tim so nguyen x , y thoa man : x - 2.x.y + 3.y = 1
tim x, y nguyen thoa man : 3.x.y + x = 2.y
tim cac so nguyen to x,y thoa man:(x -2) nhan (y-3)=-4
tim cac so nguyen to x, y thoa man: (x - 2)2(y - 3)= -4
bai 1 28(30-48)-30(28-38)
bai 2 :tim cac cap so nguyen (x:y)thoa man : y+3+x.y+3x=7
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 \(\frac{x}{2}+\frac{x}{y}-\frac{3}{2}=\frac{10}{y}\)
Tim cac cap so nguyen x,y thoa man
a) xy-5x+y=17
b) x.(y-2)=3 va x>y
