Question

Determinați valorile lui x daca: x-120mai mic sau egal215; 250-xmai mic sau egal40; x+40mai mare sau egal320,unde x este număr natural

Answer 1

x-120<=215, x<=120+215, x<=335, x=1,2, 3,...............335

250-x<=40, 250-40>=x, x<=210, x=1,2,3,.........210

x+40>=320, x>=320-40, x>=280, x=280, 281, 282............................