Question

Resolva as inequações.

a) 5x - 2 (x+6) ≥ x+4

b) 2x-1/3 - 2x ≤ 3x-2/6

Answer 1

A- 3x (7x) 5x
 so sei a A

Answer 2

A) 
$5x-2(x+6) \geq x+4 \\ 5x-2x-12 \geq x+4 \\ 5x-2x-x \geq 4+12 \\ 2x \geq 16 \\ \\ x \geq 8$


B) 
$\frac{2x-1}{3} -2x \leq \frac{3x-2}{6} \\ \frac{2(2x-1)-6.2x}{6} \leq \frac{3x-2}{6} \\ \frac{4x-2-12x}{6} \leq \frac{3x-2}{6} \\ 4x-2-12x \leq 3x-2 \\ 4x-12x-3x \leq -2+2 \\ -11x \leq 0 \\11x \geq 0 \\ \\ x \geq 0$