4x67y2
4 + x + 6 + 7 + y + 2 = 23
x + y = 23 - 17
x + y = 6
6 = 0 + 6 , x = 0 , y = 6 406762
6 = 1 + 5 , x = 1 , y = 5 416752
6 = 2 + 4 , x = 2 , y = 4 426742
6 = 3 + 3 , x = 3 , y = 3 436732
6 = 4 + 2 , x = 4 , y = 2 446722
6 = 5 + 1 , x = 5 , y = 1 456712
6 = 6 + 0 , x = 6 , y = 0 466702
