Answers

Add 90/30 and 81/56

1^st number: 3 0/30, 2^nd number: 1 25/56

90/30 + 81/56 is 249/56.

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,
   81/56 = 81 × 15/56 × 15 = 1215/840
4. Add the two like fractions:
   2520/840 + 1215/840 = 2520 + 1215/840 = 3735/840
5. 3735/840 simplified gives 249/56
6. So, 90/30 + 81/56 = 249/56
   In mixed form: 425/56

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