Answers

Add 90/30 and 21/56

1^st number: 3 0/30, 2^nd number: 21/56

90/30 + 21/56 is 27/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 56 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 30 × 28 = 840,
   90/30 = 90 × 28/30 × 28 = 2520/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   21/56 = 21 × 15/56 × 15 = 315/840
4. Add the two like fractions:
   2520/840 + 315/840 = 2520 + 315/840 = 2835/840
5. 2835/840 simplified gives 27/8
6. So, 90/30 + 21/56 = 27/8
   In mixed form: 33/8

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