Ответ:
![(-\infty;\; -1]\cup(0;\;+\infty) (-\infty;\; -1]\cup(0;\;+\infty)](https://tex.z-dn.net/?f=%28-%5Cinfty%3B%5C%3B%20-1%5D%5Ccup%280%3B%5C%3B%2B%5Cinfty%29)
Объяснение:
x\in(-\infty;\; -1]\cup(0;\;+\infty)" alt="\dfrac{6}{x}-1\le \dfrac{3}{x}+1+\dfrac{7}{x}+2\\\dfrac{4}{x}\ge -4\\\dfrac{1}{x}\ge-1\\\dfrac{1+x}{x}\ge0\\\\x\ne0\\x=-1\\\\=>x\in(-\infty;\; -1]\cup(0;\;+\infty)" align="absmiddle" class="latex-formula">