Answers

Add 15/56 and 48/40

1^st number: 15/56, 2^nd number: 1 8/40

15/56 + 48/40 is 411/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 56 × 5 = 280,
   15/56 = 15 × 5/56 × 5 = 75/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   48/40 = 48 × 7/40 × 7 = 336/280
4. Add the two like fractions:
   75/280 + 336/280 = 75 + 336/280 = 411/280
5. So, 15/56 + 48/40 = 411/280
   In mixed form: 1131/280

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