Răspuns :
a |-----|-----|12|
b |-----| } 312.
312 - 12 = 300 ( 3 segmente egale)
300 : 3 = 100 (b)
100 × 2 +12 = 212 (a)
Verificam : 212 + 100 = 312.
b |-----| } 312.
312 - 12 = 300 ( 3 segmente egale)
300 : 3 = 100 (b)
100 × 2 +12 = 212 (a)
Verificam : 212 + 100 = 312.
i------------------i--------------------i +12 primul nr
i------------------i al 2lea nr
312-12=300
300:3=100
al 2lea nr =100
primul nr=100x2+12=200+12=212 verificare
100+212=312
i------------------i al 2lea nr
312-12=300
300:3=100
al 2lea nr =100
primul nr=100x2+12=200+12=212 verificare
100+212=312