Question

Помогите 3^15-x=1/27

Answer 1

${3}^{15 - x} = \frac{1}{27} \\ {3}^{15 - x} = \frac{1}{ {3}^{3} } \\ {3}^{15 - x} = {3}^{ - 3} \\ 15 - x = - 3 \\ x = 18$