2 single family houses listed together as multifamily

[Kristopher Orr]

Hey everyone! Okay so I'm looking at a property that is listed as multifamily.  But when I went to go see it, its actually 2 separate houses that are back to back on a street. One is a 2/1 the other a 1/1. My question is, if I buy them both, then want to sell just one of them later down the road, what would that look like in terms of the loan? For round numbers, let's say I paid 100K for the pair, then sold one for 60K. Could I even do that? Would the bank call the entire loan due if I sold one? Any and all thoughts/opinions/experience welcome :-) Thanks in advance guys!