Answers

Add 21/36 and 4/63

21/36 + 4/63 is 163/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 36 × 7 = 252,
   21/36 = 21 × 7/36 × 7 = 147/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   4/63 = 4 × 4/63 × 4 = 16/252
4. Add the two like fractions:
   147/252 + 16/252 = 147 + 16/252 = 163/252
5. So, 21/36 + 4/63 = 163/252

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