![image](https://tex.z-dn.net/?f=+%5Cleft+%5C%7B+%7B%7Bx%3E%5Cfrac%7B1%7D%7B2%7D%7D+%5Catop+%7B15%3E3x%7D%7D+%5Cright.+)
\frac{1}{2}} \atop {15>3x}} \right. " alt=" \left \{ {{x>\frac{1}{2}} \atop {15>3x}} \right. " align="absmiddle" class="latex-formula">
Разделим второе уравнение на 5.
![image](https://tex.z-dn.net/?f=+%5Cleft+%5C%7B+%7B%7Bx%3E%5Cfrac%7B1%7D%7B2%7D%2C%7D+%5Catop+%7B5%3Ex%7D%7D+%5Cright.+)
\frac{1}{2},} \atop {5>x}} \right. " alt=" \left \{ {{x>\frac{1}{2},} \atop {5>x}} \right. " align="absmiddle" class="latex-formula">
Ответ: