Gaseste numerele naturalex,y si z stind ca x+y+z=7000
y+z=4280 y=x+520 ma puteti ajuta


Răspuns :

x+y+z=7000
y+z=4280
y=x+520

x+520+z=4280
y=x+520

x+z=4280-520
y=x+520

x+z=3760
y=x+520

Rezolvam problema.

7000-3760=3240 =>
3240 = y
3240-520=2720 =>
2720 = x
3240+2720= 5960
7000-5960= 1040 =>
1040=z

Verificare
1040+2720+3240= 7000