Question

помогите!!!!!!!!!!!!!​

Answer 1

$= \frac{3x+5}{3(2x+1)} +\frac{1}{(2x-1)(2x+1)} - \frac{x}{2x-1}\\ = \frac{(3x+5)(2x-1)+3-3x(2x+1)}{3(2x+1)(2x-1)}\\ = \frac{6x^{2} - 3x +10x - 5 + 3 -6x^{2} - 3x }{3(2x+1)(2x-1)} \\= \frac{4x-2}{3(2x+1)(2x-1)}\\ = \frac{2(2x-1)}{3(2x+1)(2x-1)}\\ = \frac{2}{3(2x+1)}$