Answers

Add 90/15 and 21/56

1^st number: 6 0/15, 2^nd number: 21/56

90/15 + 21/56 is 51/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 56 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 15 × 56 = 840,
   90/15 = 90 × 56/15 × 56 = 5040/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   21/56 = 21 × 15/56 × 15 = 315/840
4. Add the two like fractions:
   5040/840 + 315/840 = 5040 + 315/840 = 5355/840
5. 5355/840 simplified gives 51/8
6. So, 90/15 + 21/56 = 51/8
   In mixed form: 63/8

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