Solution - Long subtraction

29

See steps

Step-by-step explanation

1. Rewrite the numbers from top to bottom, aligned by their place values

Place value	tens	ones

	3	7
-		8

2. Subtract the numbers using long subtraction method

Because the upper digit (7) in the ones column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (17).

Place value	tens	ones
	2	17
	3	7
-		8

Subtract the numbers in the ones column from the top number:
17-8=9

Place value	tens	ones
	2	17
	3	7
-		8
		9

Write 2 in the tens place.

Place value	tens	ones
	2	17
	3	7
-		8
	2	9

The solution is: 29

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Terms and topics

Long substraction