Answer:
[tex]x = 200[/tex]
Step-by-step explanation:
[tex] {10}^{ log(5) } = {10}^{3 - log(x) } [/tex]
[tex]5 = {10}^{3} \times {10}^{log( \frac{1}{x} )} [/tex]
[tex]5 = \frac{1000}{x} [/tex]
