since we know that binary mixture that is xA + xB that will be equal to 1 that means the summation of you know mole fraction of components or will be equals to 1. So, here xA + xB, will be close to 1 that implies that xB will be equal to 1 - xA.
तर येथे xA + xB हे 1 च्या जवळ असेल जे सूचित करेल की xB हे 1 - xA च्या समान असेल.