paranteza 4supra5-2supra3paranteza
ori paranteza 2-1supra2

Răspuns:
[tex]( \frac{4}{5} - \frac{2}{3} ) \times (2 - \frac{1}{2}) = \frac{2}{15} \times \frac{3}{2} = \frac{1}{5} [/tex]