Răspuns :
2a+b+c=75+41
2a+b+c=146
b+c=62
2a+146-62
2a=84
a=84:2
a=42
b=75-42
b=33
c=62-33
c=29
2a+b+c=146
b+c=62
2a+146-62
2a=84
a=84:2
a=42
b=75-42
b=33
c=62-33
c=29
e-englezesti
r-romanesti
f-frantuzesti
e+r=71 (1)
e+f=62 (2)
r+f=75 (3)
(1)-(2) rezulta r-f=9(4)
(3)+(4)rezulta 2r=84
r=42
e=71-42
e=29
f=75-42
f=33
total 42+29+33=104
r-romanesti
f-frantuzesti
e+r=71 (1)
e+f=62 (2)
r+f=75 (3)
(1)-(2) rezulta r-f=9(4)
(3)+(4)rezulta 2r=84
r=42
e=71-42
e=29
f=75-42
f=33
total 42+29+33=104