Answers

Add 81/4 and 70/63

1^st number: 20 1/4, 2^nd number: 1 7/63

81/4 + 70/63 is 769/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 4 × 63 = 252,
   81/4 = 81 × 63/4 × 63 = 5103/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   70/63 = 70 × 4/63 × 4 = 280/252
4. Add the two like fractions:
   5103/252 + 280/252 = 5103 + 280/252 = 5383/252
5. 5383/252 simplified gives 769/36
6. So, 81/4 + 70/63 = 769/36
   In mixed form: 2113/36

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