Question

Помогите решить! Задание ЕГЭ
(1/3)^1-x=27

Answer 1

${( \frac{1}{3} )}^{1 - x} = 27 \\ {3}^{ - 1 + x} = {3}^{3} \\ - 1 + x = 3 \\ x = 3 + 1 \\ x = 4$