Răspuns:
m(AOM) + m(MOB) = AOB => (1) (Notam relatia 1)
m(AOM) = m(MOB) + 40 grade => (2) (Notam relatia 2)
Inlocuim relatia (2) in relatia (1)
m(MOB) + 40 grade + m(MOB) = AOB
Din ipoteza, AOB alungit => m(AOB) = 180 grade =>
2 x m(MOB) + 40 grade = 180 grade / - 40 grade
2 x m(MOB) = 140 grade / :2
m(MOB) = 70 grade
Din rel (2) => m(AOM) = m(MOB) + 40 grade
m(AOM) = 70 grade + 40 grade
m(AOM) = 110 grade
Spor la lucru.