Answers

Add 56/21 and 15/40

1^st number: 2 14/21, 2^nd number: 15/40

56/21 + 15/40 is 73/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   56/21 = 56 × 40/21 × 40 = 2240/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   15/40 = 15 × 21/40 × 21 = 315/840
4. Add the two like fractions:
   2240/840 + 315/840 = 2240 + 315/840 = 2555/840
5. 2555/840 simplified gives 73/24
6. So, 56/21 + 15/40 = 73/24
   In mixed form: 31/24

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