1/2 = 3/6 2/3 = 4/6
The Least Common Multiple (LCM) of the 2 denominators is 6 so, find a way (multiplying) to get the 2 denominators to 6. You multiply 2 by 3 to get 6 and 3 by 2 to get 6, you also need to multiply the numerator by whatever you multiplied the denominator by.
