Ответ:
- −13·26⁻¹ = −13/26 = −1/2.
- −6·3⁻³ = −6/27 = −2/9.
- 81·3⁻⁵ = 3⁴·3⁻⁵ = 3⁻¹ = 1/3.
- 16·(2⁻³)² = 2⁴·2⁻⁶ = 2⁻² = 1/4.
- (7⁻⁶·7⁻⁸)/7¹³ = 7⁻¹⁴/7¹³ = 7⁻²⁷ = 1/7²⁷.
- 27⁻³:9⁻⁴ = (3³)⁻³:(3²)⁻⁴ = 3⁻⁹:3⁻⁸ = 3⁻¹ = 1/3.
- (81⁻⁵·9⁻⁸)/27⁻¹¹ = ((3⁴)⁻⁵·(3²)⁻⁸)/(3³)⁻¹¹ = 3⁻³⁶/3⁻³³ = 3⁻³ = 1/27.
