Question

Afla xyz :x+y+z= 1508,x+y=931 y+z=600?

Answer 1

x+y+z=1508

x+y=931=>z=1508-931

z=577,

y+z=600

=>y=600-577=33

y=33

x=931-y, x=931-33

x=898

Answer 2

x+y+z= 1508  ,   x+y=931  si   y+z=600

         ⇵                                        ↓

931 + z = 1508                       y = 600 - 577 = 23

z = 1508-931 = 577                x = 931 -23 = 908