Question

answer this question ​

Answer 1

$\frac{ x }{3} + \frac{3}{x} = \frac{15}{x} \\ \frac{ {x}^{2} + ({3)}^{2} }{3x} = \frac{15}{x} \\ \frac{ {x}^{2} + 9 }{3} = 15 \\ {x}^{2} + 9 = 45 \\ {x}^{2} = 45 - 9 \\ {x}^{2} = 36 \\ x = + - 6$