Teorema împărțirii cu rest (T.Î.R.)
[tex]d \div î = c \: rest \: r \\ d \div 17 = c \: rest \: r \\ c = r \div 4 = > r = c \times 4 \\ r < î = > r < 17 \\ d \in \mathbb{N} = > r \vdots \: 4 = > r = 0,4,8,12,16 \\ \boxed{1} \: r = 0 = > c = 0 = > d = 0 \times 17 + 0 = 0 + 0 = \boxed{0} \\ \boxed{2} \: r = 4= > c = 1 = > d = 1 \times 17 + 4 = 17 + 4 = \boxed{21} \\ \boxed{3} \: r = 8 = > c = 2 = > d = 2 \times 17 + 8 = 34 + 8 = \boxed{42} \\ \boxed{4} \: r = 12 = > c = 3 = > d = 3 \times 17 + 12 = 51 + 12 = \boxed{63} \\ \boxed{5} \: r = 16 = > c = 4 = > d = 4 \times 17 + 16 = 68 + 16 = \boxed{84}[/tex]
