10*x+y+27 = 10*y+x
9*x-9*y+27 = 0
9*(x-y+3) = 0
x-y = -3
x = 1, y = 4; 14+27 = 41
x = 2, y = 5; 25+27 = 52
x = 3, y = 6; 36*27 = 63
x = 4, y = 7; 47+27 = 74
x = 5, y = 8; 58+27 = 85
x = 6, y = 9; 69+27 = 96
10*x+y+27 = 10*y+x
9*x-9*y+27 = 0
9*(x-y+3) = 0
x-y = -3
x = 1, y = 4; 14+27 = 41
x = 2, y = 5; 25+27 = 52
x = 3, y = 6; 36*27 = 63
x = 4, y = 7; 47+27 = 74
x = 5, y = 8; 58+27 = 85
x = 6, y = 9; 69+27 = 96