(Solved): please solve in clear step-by-step details and explanations. thank you. 6. Find all solutions to the ...

Expert Answer

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a. To find the solutions to the equation 9x ? 12 (mod 7), we need to find values of x that satisfy the congruence.

First, let's reduce the coefficients and the right-hand side to their smallest positive residues modulo 7:
9 ? 2 (mod 7)
12 ? 5 (mod 7)

The...