What's the most straightforward way to ask Mathematica to find all solutions of an equation like 3x + 2y + 4z == 0 (mod 11) (for instance), where *either* x, y, z can be considered to be integers in the range -5...5, *or* equivalently they belong to the ring Z/(11Z) of integers modulo 11 ? (I've tried a number of obvious things with no success.)