If I incur a loss on my RE business, can the income only be subtracted from other income that I earned, or can it be subtracted from my husbands' (married filing jointly)?

Subtract that off the starting balance to get the new balance.To get the outstanding balance at any point in the future, use the FV (future value) function.

Since you have a loan of $89,000 you have to subtract that from the $112,000 which would leave you with about $23,000 of equity that you would be able to pull out.Again, these numbers are based on what you've provided and on general guidelines.

@Brent Coombs I was basing those lifespan figures on this article herehttps://www.biggerpockets.com/renewsblog/2015/10/1...I basically took the age of the property and the condition of the components and subtracted it from the typical lifespan (according to this article), to come up with the remaining life of those components.

We got an estimate from a roof repair company and the estimate came to 12K.We got the insurance involved and while they agreed on the damage they deducted the amount based on life of roof and then gave an estimate of approx 8k.Then I am now at the point where I have to sign Proof of Loss statement to get cash claim and they further subtract the deductible of 3K, and effectively giving a cash $ amount of 4K+. 

Psychologically, sellers love to see above asking and surprisingly have a difficult time subtracting the seller credit.  

Then subtract some touch up painting and minor repairs that the maintenance company is going to insist you do in order to get that market rent.By the time you break even - rents could drop.

With coin I can make it $1.75 per wash and dry = $3.50 Each unit avg 3 loads a week = $73.50 week just from my building as a ruff guess.Of course, that's gross, not net and you need to subtract all the operating expenses, such as electric, water, maintenance of the room, security (and I'm not talking fake cameras), damage done by angry tenants, lease payment or debt, management (collecting the coins), capital expenses, etc.

For example, if you got a HELOC at 75% LTV they calculate it by multiplying your 275k by 75% to get about 206k, then they subtract your remaining principle of 161, which would get you a HELOC value of about 45k.Good luck!!

Hopefully, your mother can reduce the value to each of you by subtracting back all the expenses over the years.