Question

Resolva essa congruência linear passo a passo. 2x≡1(mod17)

Answer 1

$2x\equiv1\mod 17\\ \\ 2x\equiv1+17\mod 17\\ \\ 2x\equiv18\mod 17\\ \\ x\equiv9\mod 17\\ \\ \boxed{x\in\{17k+9~|~k\in\mathbb Z\}}$