1,2,3,4,6,8,12,24 are the factors of 24 1,2,3,4,6,9,12,18,36 are the factors of 36 Common factors of 24 and 36 are 1,2,3,4,6 and 12 HCF=12 Now dividing both numerator and denominator by 12 =24÷12/36÷12 =2/3 Thus 2/3 is the equivalent factor to 24/36.