求解 tx+5leq-x+100

$$t x + 5 \leq - x + 100$$

求解 x 的值

$$\left\{\begin{matrix}x\geq \frac{95}{t+1}\text{, }&t<-1\\x\leq \frac{95}{t+1}\text{, }&t>-1\\x\in \mathrm{R}\text{, }&t=-1\\x=\frac{95}{t+1}\text{, }&t\neq -1\end{matrix}\right.$$

求解 t 的值

$$\left\{\begin{matrix}t\geq -1+\frac{95}{x}\text{, }&x<0\\t\leq -1+\frac{95}{x}\text{, }&x>0\\t\in \mathrm{R}\text{, }&x=0\\t=-1+\frac{95}{x}\text{, }&x\neq 0\end{matrix}\right.$$