Answer:-
OH- (aq) + H+ (aq)--> H2O(l)
Explanation:-
LiOH, HBr and LiBr are all ionic compounds. Hence in water
LiOH gives Li+ and OH-
LiBr gives Li+ and Br-.
HBr gives H + and Br-
H2O remains as H2O since it is covalent
Now the equation is LiOH(aq) + HBr(aq) ----> H2O(l) + LiBr(aq)
Writing in ionic form
Li+ + OH- + H+ + Br- --> H2O(l) + Li+ + Br-
Cancelling out the common terms
OH- (aq) + H+ (aq) --> H2O(l)