Paid to vendors from personal account, how do i record it?

So i am new and moved from excel to QBO. I have a question

i have a vendors i was supposed to pay him 30000

i paid him from my personal bank A = 15000

and from bank B = 15000

now upon searching online in QBO community i got the idea that i should make a journal entry of 

vendors to equity.

what if i want to track my future payments from my multiple bank accounts ? can i create a parent account as equity and then sub account named equity bank A and equity bank B ? please tell me