Question

Решите систему неравенств:
$\left \{ {x+4> \frac{x}{5} } \atop {3-0.7x\geq 0.3x}} \right.$

Answer 1

$\left \{ {{x+4>\frac{x}{5}} \atop {3-0,7x \geq 0,3x}} \right. \; \left \{ {{x-\frac{x}{5}>-4} \atop {3 \geq 0,7x+0,3x}} \right. \; \left \{ {{\frac{4x}{5}>-4} \atop {3 \geq x}} \right. \; \left \{ {{x>-5} \atop {x \leq 3}} \right. \; x\in (-5;3]$