Answers

Add 90/28 and 15/40

1^st number: 3 6/28, 2^nd number: 15/40

90/28 + 15/40 is 201/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 28 × 10 = 280,
   90/28 = 90 × 10/28 × 10 = 900/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   15/40 = 15 × 7/40 × 7 = 105/280
4. Add the two like fractions:
   900/280 + 105/280 = 900 + 105/280 = 1005/280
5. 1005/280 simplified gives 201/56
6. So, 90/28 + 15/40 = 201/56
   In mixed form: 333/56

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