Solution - Long subtraction

2.1

2.1

See steps

Step-by-step explanation

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

Place value	ones	.	tenths

	3	.	3
	0	.	3
-	0	.	9
		.

2. Subtract the numbers using long subtraction method

Because the upper digit (3) in the tenths 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 (13).

Place value	ones	.	tenths
	2		13
	3	.	3
	0	.	3
-	0	.	9
		.

Subtract the numbers in the tenths column from the top number:
13-3-9=1

Place value	ones	.	tenths
	2		13
	3	.	3
	0	.	3
-	0	.	9
		.	1

Subtract the numbers in the ones column from the top number:
2-0-0=2

Place value	ones	.	tenths
	2		13
	3	.	3
	0	.	3
-	0	.	9
	2	.	1

The solution is: 2.1

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Long substraction