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Discrete mathematics solves the following equation 3x=2 in the domain Z5?
Field Z5={0, 1, 2, 3, 4}

× 0 1 2 3 4

0 0 0 0 0 0

1 0 1 2 3 4

2 0 2 4 1 3

3 0 3 1 4 2

4 0 4 3 2 1

As can be seen from the above table, the solution of equation 3x=2 is x=4.