Answers

Add 25/63 and 4/18

25/63 + 4/18 is 13/21.

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,
   25/63 = 25 × 2/63 × 2 = 50/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   4/18 = 4 × 7/18 × 7 = 28/126
4. Add the two like fractions:
   50/126 + 28/126 = 50 + 28/126 = 78/126
5. 78/126 simplified gives 13/21
6. So, 25/63 + 4/18 = 13/21

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