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# Binary numbers subtraction using the complement methods – Steps

## STEPS FOR BINARY SUBTRACTION USING 1’s and 2’s Complement Method

1. Make equal no of bits in both minuend and subtrahend
2. Calculate
• 1’s Complement of subtrahend if you’re performing subtracting using 1’s complement method.
• 2’s complement of the subtrahend if you’re performing subtraction using 2’s complement method
(Also view how to calculate 1’s and 2’s complements here.)
3. Add result of step 2 with minuend to calculate the last sum.
4. Inspect the last sum for carrying or overflow bit with the following conditions to calculate answer.

## Example for further understanding.

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The author of this blog post is a technology fellow, an IT entrepreneur, and Educator in Kathmandu Nepal. With his keen interest in Data Science and Business Intelligence, he writes on random topics occasionally in the DataSagar blog.
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