Question

resolva a inequação 3(5 + x) > 2(3 – x) + 1

Answer 1

Resposta:

$\sf 3(5 + x) > 2(3 - x) + 1$

$\sf 15+ 3x > 6 - x + 1$

$\sf 3x +x > 1 - 15$

$\sf 4x > - 14$

$\sf x > - \dfrac{14}{4}$

$\boxed{ \boxed { \boldsymbol{ \sf \displaystyle x > - \dfrac{7}{2} }}} \quad \gets \mathbf{ Resposta }$

$\boldsymbol{ \sf \displaystyle S = \bigg\{x\in\mathbb{R} \mid x > - \dfrac{7}{2} \bigg\} }$