(X-6)^2=(7-x)^2 решите пж

Question

(X-6)^2=(7-x)^2 решите пж

Answer 1

(x-6)² = (7-x)²
x² -12x +36 = 49 - 14x +x²
x² -12x+14x-x² = 49-36
-12x+14x = 13
2x = 13
x = 6.5