Answers

Add 7/63 and 21/18

1^st number: 7/63, 2^nd number: 1 3/18

7/63 + 21/18 is 23/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   7/63 = 7 × 2/63 × 2 = 14/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   21/18 = 21 × 7/18 × 7 = 147/126
4. Add the two like fractions:
   14/126 + 147/126 = 14 + 147/126 = 161/126
5. 161/126 simplified gives 23/18
6. So, 7/63 + 21/18 = 23/18
   In mixed form: 15/18

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