👤

a plus a egal b
bxb egal c ,cplus19 egal 55




Răspuns :

A+A = B
B*B = C
C+19 = 55
Deci → C = 55-19 → C = 36
Deci → B = √C → B = √36 → B = 6
Deci → A = B/2 → A = 6/2 → A = 3