Answers

Add 81/60 and 40/18

1^st number: 1 21/60, 2^nd number: 2 4/18

81/60 + 40/18 is 643/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 18 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 18 × 10 = 180,
   40/18 = 40 × 10/18 × 10 = 400/180
4. Add the two like fractions:
   243/180 + 400/180 = 243 + 400/180 = 643/180
5. So, 81/60 + 40/18 = 643/180
   In mixed form: 3103/180

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