Subtract Ones Place: First, we need to subtract the ones place. So, 7 minus 9, we can't do that cause 7 is smaller than 9. We need to borrow from the tens place.
Borrowing from Tens: After borrowing, we have 17 in the ones place and 7 in the tens place. Now, 17−9=8.
Subtract Tens Place: Next, we subtract the tens place. But we borrowed 1, so it's 7 minus 5 minus 1. That's 1, not 2. Oops, I made a mistake here.
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