Question

Inequações 2.(x+4) ≤3 (x+7)-6

Answer 1

2x + 8 ≤ 3x + 21 - 6
8 - 15 ≤ 3x -2x
x ≥ - 7

Answer 2

$2.(x+4) \leq 3. (x+7)-6\to \\\\ 2x+8 \leq 3x+21-6\to \\\\ 2x-3x \leq 21-6-8\to \\\\ -x \leq 7~~(-1)\to \\\\ x \geq -7\\\\\\\\ \boxed{S=\{xER|x \geq -7\}}$