Question

Выполнить действия: 1 3/7+2 7/8; 17 1/3-8 5/9; 12 1/4 -3 5/6+5 7/8

Answer 1

1 3/7+2 7/8=10/7+23/8=4 17/56
17 1/3-8 5/9=52/3-77/9=79/9=8 7/9
12 1/4-3 5/6+5 7/8=49/4-23/6+47/8=14 7/24

Answer 2

17¹/₃-8⁵/₉= ⁵²/₃-⁷⁷/₉= ⁵²ˣ³/₉-⁷⁷/₉= ¹⁵⁶/₉-⁷⁷/₉= ¹⁵⁶⁻⁷⁷/₉ = ⁷⁹/₉ = 8⁷/₉ 
12¹/₄ -3⁵/₆+5⁷/₈ = ⁴⁹/₄ -²³/₆+⁴⁷/₈ = ⁴⁹ˣ⁶/₂₄ -²³ˣ⁴/₂₄+⁴⁷ˣ³/₂₄ =²⁹⁴/₂₄ -⁹²/₂₄+¹⁴¹/₂₄ = ³⁴³/₂₄ = 14⁷/₂₄