Question

Решите систему уравнений
(5x>5x-3
(-3x<2

Answer 1

$\displaystyle\bf\\\left \{ {{5x>5x-3} \atop {-3x<2}} \right. \\\\\\\left \{ {{5x-5x>-3} \atop {x>-\frac{2}{3} }} \right. \\\\\\\left \{ {{0\cdot x>-3} \atop {x>-\frac{2}{3} }} \right. \\\\\\\left \{ {{x\in R} \atop {x>-\frac{2}{3} }} \right. \ \ \Rightarrow \ x>-\frac{2}{3} \\\\\\Otvet:x\in\Big(-\frac{2}{3} \ ; \ +\infty\Big)$