Bangladesh Bank

Bangladesh Bank Recruitment 61. If $P=frac{x^{2}-36}{x^{2}-49}$ and $Q=frac{x+6}{x+7}$, then what is the value of $frac{P}{Q}$? (a)$ frac{x-6}{x-7} $                     (b) $frac{x-6}{x+7}$ (c) $frac{x-6}{x+6}$         ...