Răspuns :
82-40=42km (ramasi in cele doua zile)
a+a+2=42
2a=42-2
2a=40
a=40:2
a=20 (km a parcurs in prima zi)
20+2=22(km in a doua zi)
verificare:
20+22+40=42+40=80
a+a+2=42
2a=42-2
2a=40
a=40:2
a=20 (km a parcurs in prima zi)
20+2=22(km in a doua zi)
verificare:
20+22+40=42+40=80
82-40=42(kilometri a parcurs ciclistul in primele doua zile)
a+(a+2)=42
2a+2=42
2a=40
a=20
a+2=22
in prima zi a parcurs 20 kilometri
in cea de-a doua zi a parcurs 22 kilometri
a+(a+2)=42
2a+2=42
2a=40
a=20
a+2=22
in prima zi a parcurs 20 kilometri
in cea de-a doua zi a parcurs 22 kilometri