Răspuns :
x + y + z = 759
x + y = 654 } => z = 759 - 654 = 105
x + y + z = 759
y + z = 328 } => x = 759 - 328 = 431
x + y = 654
x = 431 } => y = 654 - 431 = 223
x+y+z=759
x+y=654 }=>z=759-654=105
x+y+z=759
y+z=328 }=>x=759-328=431
x+y=654
x=431 }=>y=654-431=223