− | Show that the solutions which use more than one string are correct, use the Lowest Common Denominator [http://en.wikipedia.org/wiki/Lowest_common_denominator(LCD)] method, for example for the case of 1/3 +1/6 = 1/2 | + | Show that the solutions which use more than one string are correct, use the Lowest Common Denominator ([http://en.wikipedia.org/wiki/Lowest_common_denominator LCD]) method, for example for the case of 1/3 +1/6 = 1/2 |