Suma a trei numere impare consecutive este 60. Afla numerele. (METODA GTAFICA)

Răspuns :

a /____/

b /____/ + 1

c /____/ + 1 + 1

total 60


60 - 1 - 1 = 57

57 : 3 = 19 ( a )

19 + 1 = 20 ( b )

19 + 2 = 21 ( c )

Verificare : 19 + 20 + 21 = 60
/-----------/
/-----------/ +2
/-----------/ +4
total 60

3 segmente+6=60

3 sgm=60-6=54

1 segment=54:3=18

1 numar=18
2 numar=18+2=20
3 numar=18+4=22