Find counter examples to each of these statements:
(1) If ac = bc(mod m), a,b,c, m are integers, m=>2, then a=b(mod m)
(2) if a = b(mod m) and c=d(mod m); a,b,c,d,m are integers; c,d>0 and m=> 2, then a^c = b^d(mod m)[note: every = should be triple equal]