Question

( PRECISO DA CONTA+RESPOSTA) INEQUAÇÃO: 2(2-x)≥ 4x+2

Answer 1

Resolução

2.( 2 - x ) ≥ 4x + 2
4 - 2x ≥ 4x + 2
- 2x - 4x ≥ 2 - 4
- 6x ≥ - 2  .(-1)
6x ≤ 2
x ≤  2   (: 2)
      6
x ≤  1 
       3

Answer 2

$2(2-x) \geq 4x+2\to \\\\ 4-2x \geq 4x+2\to \\\\ -2x-4x \geq 2-4\to \\\\-6x \geq -2(-1)\to\\\\ 6x \leq 2\to \\\\ x \leq \frac{2}{6} \to \\\\ x \leq \frac{1}{3} \\\\\\\\ S=\{xER|x \leq \frac{1}{3} \}$