Question

Subtract in binary

Answer 1

Hello student,

Steps for Binary Subtraction are:

1: Start from the column of Least significant bit.

2: Subtract vertically like in usual subtraction process, following the rules of binary subtraction.

3: Only if needed, borrow from the next column.

Rules for Binary Subtraction

X	- Subtract	Y	Result	Borrow
0	-	0	0	0
0	-	1	1	1
1	-	0	1	0
1	-	1	0	0

Example-

Let us subtract 12 (1100) and 6 (0110)

Here ( ) symbol means carrying 1. (Rules of binary subtraction)

In third column from the Lsb after borrowing 1, that place becomes 0. Same with the 4^th column too.

We get answer as 0110 which is 6.

Subtracting 12 and 6 in decimal form also gives 6.

Thus correct.

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