Answers

Add 81/30 and 42/63

1^st number: 2 21/30, 2^nd number: 42/63

81/30 + 42/63 is 101/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 30 × 21 = 630,
   81/30 = 81 × 21/30 × 21 = 1701/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   42/63 = 42 × 10/63 × 10 = 420/630
4. Add the two like fractions:
   1701/630 + 420/630 = 1701 + 420/630 = 2121/630
5. 2121/630 simplified gives 101/30
6. So, 81/30 + 42/63 = 101/30
   In mixed form: 311/30

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