Answers

Add 81/40 and 30/63

1^st number: 2 1/40, 2^nd number: 30/63

81/40 + 30/63 is 2101/840.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 63 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 40 × 63 = 2520,
   81/40 = 81 × 63/40 × 63 = 5103/2520
3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
   30/63 = 30 × 40/63 × 40 = 1200/2520
4. Add the two like fractions:
   5103/2520 + 1200/2520 = 5103 + 1200/2520 = 6303/2520
5. 6303/2520 simplified gives 2101/840
6. So, 81/40 + 30/63 = 2101/840
   In mixed form: 2421/840

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