4)
a : b = b/2 rest (b : 2) : 4
b/2 + b/2 : 4 = 20
b/2 + b/2 × 1/4 = 20
b/2 + b/8 = 20
4 b + b = 8 x 20
5 b = 160
b = 160 : 5
b = 32 → impartitorul
32 : 2 = 16 → catul
restul = 16 : 4 = 4
Reconstituim impartirea:
a : 32 = 16 rest 4
a = 16 x 32 + 4
a = 512 + 4
a = 516 → deimpartitul
Raspuns: 516, 32
