Question

mircea si victoria au impreuna 77kg, victoria si alina au impreuna 65kg, iar mircea si alina au 74 kg. cate kg are fiecare ?

Answer 1

A + V = 65; A + M = 74; 74 - 65 = 9 ⇒ M = V + 9
acum inlocuim in M +V = 77 SI OBTINEM V + 9 + V = 77 ⇒ 2V = 77 - 9 ⇒ V = 68/2 = 34
V + A = 65 ⇒ A = 65 - 34 = 31
M + A = 74 ⇒ M = 74 - 31 = 43