What particle is needed to complete this equation

14/7N+ _______=14/7C+ 1/1H

I think it is a beta particle because of beta decay and transmutation.
I could be really off because this chapter is really confusing me.

2 answers

you have seven protons on the left, and 8 on the right. the missing particle is a proton.
When did Carbon get 7 protons?