If you want to find equivalent fractions to you can multiply the numerator and denominator by the same number. You don't change the value of a fraction if you multiply its top and bottom numbers by the same number because you are just multiplying by 1.
Some equivalent fractions of 6/9 are:
2/3 = 4/6 = 6/9 = 8/12 = 10/15 = 12/18 = 14/21 = 16/24 = 18/27 = 20/30 = 22/33 = 24/36 = 26/39 = 28/42 = 30/45 = 32/48 = 34/51 = 36/54 = 38/57 = 40/60
