Răspuns :
29.
x= 1508-600=908
z=1508-931=577
y=1508-(908+577)=1508-1485=23
x=908
z=577
y=23
x+y+z=908+577+23=1508
x+y=908+23=931
y+z=23+577=600
x= 1508-600=908
z=1508-931=577
y=1508-(908+577)=1508-1485=23
x=908
z=577
y=23
x+y+z=908+577+23=1508
x+y=908+23=931
y+z=23+577=600