Question

Решите неравенство 5 + 7 (- х + 2) ≤ 12.

Answer 1

5-7х+14<=12
-7х<=-7
х>=1
х €[1;+бесконечности)

Answer 2

5-7х+14≤12
7х≥5+14-12
7х≥7
х≥7/7
х≥1