Răspuns:
Explicație pas cu pas:
MMCMXLIX - MLXXVIII = MDCCCLXXI
↓ ↓ ↓
2 949 - 1 078 = 1 871
_________________________________
Cifre romane:
I, V, X, L, C, D, M
↓ ↓ ↓ ↓ ↓ ↓ ↓
1, 5; 10; 50; 100; 500; 1000
_________________________
MMCMXLIX →M + M + CM + XL + IX=
↓ ↓ ↓ ↓ ↓
= 1000+1000+(1000-100) + (50-10)+(10-1) =
= 2000+ 900+40+9
= 2 949
MLXXVIII → M + LXX + VIII=
↓ ↓ ↓
=1000+(50+10+10)+(5+1+1+1) =
= 1000 + 70 + 8 =
= 1 078
