Binary Substraction?

Question

This is a binary substraction problem:
( 10010101 - 110101)
Please solve problem and tell me easy way(without calculator) to solve binary substraction in description.

Answer 1

10010101
. - 110101
----------------
.. 1100000


remember 100-1 = 11

Answer 2

Solve it exactly the same way you would solve a decimal subtraction problem, by writing the second number below the first and then borrowing as needed. Just remember that 10 - 1 = 1 in binary.

Answer 3

To perform a binary subtraction you first have to represent the number to be subtracted in its negative form. This is known as its two's complement.
The two's complement of a binary number is obtained by:


Replacing all the 1's with 0's and the 0's with 1's. This is known as its one's complement.

Adding 1 to this number by the rules of binary addition.

Now you have the two's complement.

Example:
The decimal subtraction 29 - 7 = 22 is the same as adding (29) + (-7) = 22


Convert the number to be subtracted to its two's complement:

00000111 (decimal 7)
11111000 (one's complement)
+ 00000001 (add 1)
11111001 (two's complement)

11111001 now represents -7.


Add

29 00011101
+- 7 11111001
22 (1)00010110

Note that the final carry 1 is ignored.

Answer 4

10010101
110101
-------------
01100000
the same way as you would subtract in the decimal system
the only difference is when you borrow from zero it will not be 10. it ill be 2

Answer 5

nah it dnt i dnt get it sorri x

Answer 6

10010101
)))110101
----------------
)1100000