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x-(y+z-t)-y+t, x=3000,y= 200, z-t= 350, si t= 70

Răspuns :

x-(y+z-t)-y+t=3000-(200+350)-200+70=2320

3000-(200+350)-200+70= 3000-550-200+70= 2450-200+70= 2250+70= 2320