Find the inverse of 55 modulo 7 by using extended Euclidean Algorithm step by step solution
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Apply Euclidean Algorithm to compute GCD as shown in the left column.
It will verify that
Then we will solve for the remainders in the right column.
Use the equations in the right side and perform reverse operation as:
Therefore or of we prefer a residue value for multiplicative inverse
Therefore, is the multiplicative inverse of