https://bbs.wenxuecity.com/myhouse/11902071.html
x+2xy+y=283
2x+4xy+2y=566
(2x+1)(2y+1)=567
567===》1 x 567 3x189 7x81 9x63
2x+1=9 》 x=4
2y+1=63 》 y=31
x+y=35