3⁻³ = 1/9
9*1/9 = 1
12⁻¹ = 1/12
1 - 1/12 = 11/12
(11/12)⁻¹ = 12/11 = 1 1/11
(9•3⁻³−12⁻¹)⁻¹ = 1 целая и 1/11
9*1/9 = 1
12⁻¹ = 1/12
1 - 1/12 = 11/12
(11/12)⁻¹ = 12/11 = 1 1/11
(9•3⁻³−12⁻¹)⁻¹ = 1 целая и 1/11
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