Here's the silver nitrate + sodium bromide net ionic equation:
AgNO3 + NaBr ==> NaNO3 + AgBr (this is the balanced molecular equation)
Ag{+} + NO3{-} + Na{+} + Br{-} ==> Na{+} + NO3{-} + AgBr (the full ionic equation)....
And then for the net ionic equation, cancel out ions which are the same on the both sides:
Br{-} + Ag{+} ==> AgBr
AgNO3 + NaBr ==> NaNO3 + AgBr (this is the balanced molecular equation)
Ag{+} + NO3{-} + Na{+} + Br{-} ==> Na{+} + NO3{-} + AgBr (the full ionic equation)....
And then for the net ionic equation, cancel out ions which are the same on the both sides:
Br{-} + Ag{+} ==> AgBr