Question

Помогите с алгеброй.

Answer 1

$\displaystyle\tt \frac{1}{t-2}- \frac{5}{t+2}=\frac{1}{t-2}\cdot \frac{5}{t+2}; \ \ \ t\neq \pm2\\\\\\ \frac{1(t+2)-5(t-2)}{(t-2)(t+2)}=\frac{5}{(t-2)(t+2)}\\\\\\ t+2-5t+10=5\\\\-4t=5-12\\\\-4t=-7\\\\t=\frac{-7}{-4}=1.75$

Ответ: t = 1,75