Aratati ca (2+1/2) · 4/5 = 2

Răspuns :

2+1/2=(4+1)/2=5/2
(2+1/2)*4/5=5/2 *4/5=4/2=2
(2+1/2)•4/5=5/2•4/5=4/2=2
Succes!