Answers

Add 21/40 and 64/60

1^st number: 21/40, 2^nd number: 1 4/60

21/40 + 64/60 is 191/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 60 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 40 × 3 = 120,
   21/40 = 21 × 3/40 × 3 = 63/120
3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
   64/60 = 64 × 2/60 × 2 = 128/120
4. Add the two like fractions:
   63/120 + 128/120 = 63 + 128/120 = 191/120
5. So, 21/40 + 64/60 = 191/120
   In mixed form: 171/120

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