There is a math problem, I believe that no one will know what is going on?

lanjinan
I borrowed 100,000 yuan from my brother
Where did I borrow 100,000 yuan from my sister
Then I paid 170,000 yuan to buy a house

Now I have 30,000 yuan left, and I also pay 10,000 yuan for each of my brother and sister.

I still owe them 90,000 yuan

90 thousand + 90 thousand = 180 thousand
Plus my remaining 10,000, a total of 190,000

Where did the remaining 10,000 go?
There is a math problem, I believe that no one will know what is going on?
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