Question

ПОЖАЛУЙСТА ОЧЕНЬ СРОЧНО ПОМОГИТЕ!!!​

Answer 1

Ответ:

$\left\{\begin{array}{l}-4\leq \dfrac{1-5x}{4}\leq 1\ \ \ \Big|\cdot 4\\\dfrac{x+1}{3}-\dfrac{x-2}{2}\geq 1\ \Big|\cdot 6\end{array}\right\ \ \left\{\begin{array}{l}-16\leq 1-5x\leq 4\\2x+2-3x+6\geq 6\end{array}\right\ \ \left\{\begin{array}{l}-17\leq -5x\leq 3\\-x\geq -2\end{array}\right\\\\\\\left\{\begin{array}{l}-3\leq 5x\leq 17\\x\leq 2\end{array}\right\ \ \left\{\begin{array}{l}-0,6\leq x\leq 3,4\\x\leq 2\end{array}\right\ \ \ \Rightarrow \ \ \ -0,6\leq x\leq 2\\\\\\x\in [-0,6\ ;\ 2\ ]$