Answers

Add 3/21 and 56/60

3/21 + 56/60 is 113/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   3/21 = 3 × 20/21 × 20 = 60/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   56/60 = 56 × 7/60 × 7 = 392/420
4. Add the two like fractions:
   60/420 + 392/420 = 60 + 392/420 = 452/420
5. 452/420 simplified gives 113/105
6. So, 3/21 + 56/60 = 113/105
   In mixed form: 18/105

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