Subtract 20-9

Math
20-9
Subtract using long subtraction.
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Set up the subtraction problem in long subtraction format.
20
9
Borrow 10 from the digit in the next column to the left. Add the borrowed 10 to 0. Reduce the number that was borrowed from by 1.
110
20
9
Subtract 9 from 10.
110
20
9
1
Subtract 0 from 1.
110
20
9
11
110
20
9
11
The result of 20-9 is 11.
11
Subtract 20-9

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