Question

tìm x thuộc Z , biết :3y-xy-2x+1=0

Answer 1

nay, phat hien roi nha .............................................................................. hung

Answer 2

3y-xy-2x+1=0

(3-x)y+6-2x-5=0

(3-x)y+2(3-x)=5

(3-x) (y+2)=5

con lai thi tu ma lam!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ha hi

Answer 3

ma thay hinh dai dien ha rang rua????