Question

sa se alfe numerele x , y , z stiind ca x +y =385 y+z =586 si x + z =793

Answer 1

x+y=385 =>x=385-y
x+z=793 =>x=793-z
Egalam cele doua expresii in functie de x

385-y=793-z =>793-385=z-y =>z-y=408 =>z=408+y
408+y+y=586
408+2y=586 =>2y=586-408 =>2y=178 =>y=89
=>z=408+89 =>z=497
x+89=385 =>x=385-89 =>x=249

x=249
y=89
z=497