Question regarding fair share in an LLC

[Bruce M.]

I don't post much if at all here on this forum but here goes. Myself and my sister want to set up an LLC where we are in it 50/50. Starting out, I'm sure we are going to have to look at owner financed deals or simply guarantee the loan with our own credit. My question is, everytime property is obtained, in the beginning stages, it's quite possible that we wouldn't be putting the same amount of money down. How do I determine fair share in the assets if we are 50/50 in an LLC if she put up 10% and me 90% of the downpayment for property #1 and I put up 30% and she 60% of property #2? I hope this question makes sense.