а) 5 + 2⅜ = (5 + 2) + ⅜ = 7⅜

б) 10¾ - 7 = (10 - 7) + ¾ = 3¾

в) 4⅙ + 10 = (4 + 10) + ⅙ = 14⅙

г) 12⁸/¹⁵ - 12 = (12 - 12) + ⁸/¹⁵ = ⁸/¹⁵

д) 4¹/⁹ + 3⁴/⁹ = (4 + 3) + (1/9 + 4/9) = 7⁵/⁹

е) 7⁵/⁷ - 4³/⁷ = (7 - 4) + (5/7 - 3/7) = 3²/⁷

ж) 3⁸/¹¹ + 5²/¹¹ = (3 + 8) + (8/11 + 2/11) = 11¹⁰/¹¹

з) 9⁷/¹² - 7 ⁶/¹² = (9 - 7) + (7/12 - 6/12) = 2¹/¹²

и) 4⅗ + 2⅘ = (4 + 2) + (⅗ + ⅘) = 6 + 1 + ⅖ = 7⅖

к) 8⁹/¹³ + 7¹²/¹³ = (8 + 7) + (9/13 + 12/13) = 15 + 1 + ⁸/¹³ = 16⁸/¹³

л) 5⅗ - 1⅘ = (5 - 1) + (⅗ - ⅘) = 4⅕

м) 4⁵/¹¹ - 2⁸/¹¹ = (4 - 2 - 1) + (1⁵/¹¹ - ⁸/¹¹) = 1 + (16/11 - 8/11) = 1⁸/¹¹

н) 5 - ⁵/⁹ = (5 - 1) + (9/9 - 5/9) = 4⁴/⁹

о) 8 - ⁷/¹² = (8 - 1) + (12/12 - 7/12) = 7⁶/¹² = 7½

п) 5 - 3⅜ = (5 - 3 - 1) + (8/8 - 3/8) = 1⅝

р) 4 - 3⁵/⁹ = (4 - 3 - 1) + (9/9 - 5/9) = 4/9