Assignment:
Find the solutions of
(a) 4x is congruent to 3(mod 7)
(b) 9x is congruent to 11(mod 26)
(c) 3x + 1 is congruent to 4(mod 5)
(d) 8x is congruent to 6(mod 14).
Provide complete and step by step solution for the question and show calculations and use formulas.