Answers

Add 1/4 and 21/63

1/4 + 21/63 is 7/12.

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,
   1/4 = 1 × 63/4 × 63 = 63/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   21/63 = 21 × 4/63 × 4 = 84/252
4. Add the two like fractions:
   63/252 + 84/252 = 63 + 84/252 = 147/252
5. 147/252 simplified gives 7/12
6. So, 1/4 + 21/63 = 7/12

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