Răspuns :
Explicație pas cu pas:
( 2 + 1 / 2 ) x 4 / 5 =
= ( 4 / 2 + 1 / 2 ) x 4 / 5
= 5 / 2 x 4 / 5
= 2
[tex](2 + \frac{1}{2} ) \times \frac{4}{5} = \\ ( \frac{4}{2} + \frac{1}{2} ) \times \frac{4}{5} = \\ \frac{5}{2} \times \frac{4}{5} = \frac{20}{10} = 2[/tex]