Question

Решите задание, задание на фоте.

Answer 1

$frac{10x}{10x-1} - frac{1}{10x+1} = frac{10x(10x+1)-1(10x-1)}{(10x-1)(10x+1)} = frac{100x^2+10x-10x+1}{(10x-1)(10x+1)} = \ \ = frac{100x^2+1}{(10x-1)(10x+1)}$