Răspuns:
(⁸⁾2/3+³⁾5/8+²⁾11/12)×5 1/3 =
= (16+15+22)/24 ₓ (5ₓ3+1)/3
= 53/24 ₓ 16/3
= 106/9
= 11 7/9
(2 1/2 - 1 3/8)(3 1/2 - 5/6)ₓ 1 1/3 =
= (⁴⁾5/2 - 11/8)(³⁾7/2 - 5/6 )ₓ 4/3
= (20/8 - 11/8)(21/6 - 5/6)ₓ 4/3
= 9/8ₓ16/6ₓ4/3
= 4
3/4ₓ4/7 + 2/5ₓ3/6 =
= ⁵⁾3/7 + ⁷⁾1/5
= 15/35 + 7/35
= 22/35
=
