4⁵/₃₉-(t+1⁷/₂₆)=2³/₁₃
4⁵/₃₉-t-1⁷/₂₆=2³/₁₃
4⁵/₃₉-t = 2³/₁₃ + 1⁷/₂₆
4⁵/₃₉-t = 2³ˣ²/₂₆ + 1⁷/₂₆
4⁵/₃₉-t = 2⁶/₂₆ + 1⁷/₂₆
4⁵/₃₉-t = 3¹³/₂₆
4⁵/₃₉-t = 3¹/₂
-t = 3¹/₂ - 4⁵/₃₉
-t = ¹ˣ³⁹/₇₈ - 1⁵ˣ²/₇₈
-t = ³⁹/₇₈ - 1¹⁰/₇₈
-t = ³⁹/₇₈ - ⁸⁸/₇₈
-t = -⁴⁹/₇₈
t = ⁴⁹/₇₈
Проверка
4⁵/₃₉-(⁴⁹/₇₈+1⁷/₂₆) = 2³/₁₃
4⁵/₃₉ - ⁴⁹/₇₈ - 1⁷/₂₆ = 2³/₁₃
4⁵ˣ²/₇₈ - ⁴⁹/₇₈ - 1⁷ˣ³/₇₈ = 2³/₁₃
4¹⁰/₇₈ - ⁴⁹/₇₈ - 1²¹/₇₈ = 2³/₁₃
3⁸⁸/₇₈ - ⁴⁹/₇₈ - 1²¹/₇₈ = 2³/₁₃
3³⁹/₇₈ - 1²¹/₇₈ = 2³/₁₃
2¹⁸/₇₈ = 2³/₁₃
2³/₁₃ = 2³/₁₃