Answers

Add 25/63 and 8/21

25/63 + 8/21 is 7/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 21 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   25/63 = 25 × 1/63 × 1 = 25/63
3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
   8/21 = 8 × 3/21 × 3 = 24/63
4. Add the two like fractions:
   25/63 + 24/63 = 25 + 24/63 = 49/63
5. 49/63 simplified gives 7/9
6. So, 25/63 + 8/21 = 7/9

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