The solution of 8x≡6(mod 14) is
{8, 6}
{6, 14}
{6, 13}
{8, 14, 16}
Since,
8x ≡ 6 (mod 14)
i.e., 8x-6-14k for k ∈ I
The values 6 and 13 satisfy this equation, while 8, 14 and 16 do not