Answers

Add 81/60 and 20/45

1^st number: 1 21/60, 2^nd number: 20/45

81/60 + 20/45 is 323/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 60 × 3 = 180,
   81/60 = 81 × 3/60 × 3 = 243/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   20/45 = 20 × 4/45 × 4 = 80/180
4. Add the two like fractions:
   243/180 + 80/180 = 243 + 80/180 = 323/180
5. So, 81/60 + 20/45 = 323/180
   In mixed form: 1143/180

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