Răspuns:
91/30
Explicație pas cu pas:
[³⁾4/5 + ⁵⁾7/3 -(⁵⁾4/3 + ³⁾1/5 -2/15)] + [²⁾23/10 -(⁵⁾7/4 -⁴⁾2/5)+11/20] +²⁾1/10 =
= [12/15 +35/15 -(20+3-2)/15] + [46/20-(35-8)/20+11/20]+2/20 =
= (12+35-21)/15 + (46/20- 27/20+11/20] +2/20 =
= 26/15 + 24/20 + 2/20 = ⁴⁾26/15 + ³⁾26/20 = (104+78)/60 = 182/60⁽²=
= 91/30