Răspuns :
r-nr ratelor
g-nr gainilor
r+g=63
r=6xg
r+g=6xg+g =63
7xg=63|:7
g=9
r=9x6 =54
R: 9 gaini si 6 rate
g-nr gainilor
r+g=63
r=6xg
r+g=6xg+g =63
7xg=63|:7
g=9
r=9x6 =54
R: 9 gaini si 6 rate