Question

Помогите 3^15-x=1/27

Answer 1

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