History of Hindu Mathematics: A Source Book v2.c17.s21.43

v2.c17.s21.43

Now, if $(kn ± c)/b = a whole number,$ (xn ± c)/b will be an integral number when (1) m = b or (2) b is a factor of mn, n mn-1 k, etc. Or, in other words, knowing one integral solution of (1) an infinite number of others can be derived.