(х - 6)^2 = (7 - х)^2;
x^2 - 12x + 36 = 49 - 14x + x^2;
x^2 - x^2 - 12x + 14x = 49 - 36;
2x = 13;
x = 13 : 2;
x = 6.5.
(х - 6)^2 = (7 - х)^2;
x^2 - 12x + 36 = 49 - 14x + x^2;
x^2 - x^2 - 12x + 14x = 49 - 36;
2x = 13;
x = 13 : 2;
x = 6.5.