Solve 3x + 3 = x + 5 mod 11 (= is congruence not equality...) (3x - x) = (5 - 3) mod 11 2x = 2 mod 11 2x = 13 mod 11 x = 13/2 mod 11 Is this correct?
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No. To be able to divide by an element (2 in this example) you need to find such that . If the inverse does not exist, you cannot "divide" by . so in your example, and ...
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