Question

quero ver quem vai responde pra ganha 44 pontos 3.(x-1)-2x≥13

Answer 1

$3.(x-1)-2x \geq 13\to \\\\ 3x-3-2x \geq 13\to \\\\ 3x-2x \geq 13+3\to \\\\ x \geq 16\\\\\\\\ \boxed{S=\{xER|~x \geq 16\}}$