Answers

Add 21/15 and 56/40

1^st number: 1 6/15, 2^nd number: 1 16/40

21/15 + 56/40 is 14/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 15 × 8 = 120,
   21/15 = 21 × 8/15 × 8 = 168/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   56/40 = 56 × 3/40 × 3 = 168/120
4. Add the two like fractions:
   168/120 + 168/120 = 168 + 168/120 = 336/120
5. 336/120 simplified gives 14/5
6. So, 21/15 + 56/40 = 14/5
   In mixed form: 24/5

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