Question

Решить систему неравенств 7х−15<4х−3,11х−32>13х−42.

Answer 1

Ответ:

$\left\{\begin{array}{l}7x-15<4x-3\\11x-32>13x-42\end{array}\right\ \ \left\{\begin{array}{l}7x-4x<15-3\\42-32>13x-11x\end{array}\right\ \ \left\{\begin{array}{l}3x<12\\2x<10\end{array}\right\ \ \left\{\begin{array}{l}x<4\\x<5\end{array}\right\\\\\\\Rightarrow \ \ \ x<5\ \ ,\ \ \ x\in (-\infty ;\ 5\ )$