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1 7/9х -1 1/9 = 4 2/9(1-х)

1⁷/₉х -1¹/₉= 4²/₉(1-x)¹⁶/₉х - ¹⁰/₉ = ³⁸/₉(1-x)¹⁶/₉х - ¹⁰/₉ = ³⁸/₉ - ³⁸/₉x¹⁶/₉х + ³⁸/₉x = ³⁸/₉ + ¹⁰/₉¹⁶⁺³⁸/₉х  = ⁴⁸/₉ ⁵⁴/₉х  = ⁴⁸/₉ 6х  = ⁴⁸/₉ x = ⁴⁸/₉ : 6x = ⁴⁸/₉ × ¹/₆x = ⁴⁸ˣ¹/₉ₓ₆x = ⁸/₉ПРОВЕРКА1⁷/₉* ⁸/₉ -1¹/₉= 4²/₉(1-⁸/₉)¹⁶/₉* ⁸/₉ -¹⁰/₉= ³⁸/₉* ¹/₉¹⁶ˣ⁸/₉ₓ₉ -¹⁰/₉= ³⁸ˣ¹/₉ₓ₉¹²⁸/₈₁ - ¹⁰/₉ = ³⁸/₈₁¹²⁸/₈₁ - ⁹⁰/₈₁ = ³⁸/₈₁¹²⁸⁻⁹⁰/₈₁ = ³⁸/₈₁      ³⁸/₈₁ = ³⁸/₈₁