Răspuns :
5x5=25
55-25=30
5 crizanteme costa 30 lei
30:5=6
6 lei costa o crizantema
bafta!
5l + 5t + 5c = 55 ron
7l + 7t = 49 ron
c = ?
7l +7t = 49 ron | :7
l + t = 7 ron | •5
5l + 5t = 35 ron
=> 35 ron + 5c = 55 ron
=> 5c = 20 ron
=> c = 4 ron
7l + 7t = 49 ron
c = ?
7l +7t = 49 ron | :7
l + t = 7 ron | •5
5l + 5t = 35 ron
=> 35 ron + 5c = 55 ron
=> 5c = 20 ron
=> c = 4 ron