Answers

Add 21/45 and 1/63

21/45 + 1/63 is 152/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   21/45 = 21 × 7/45 × 7 = 147/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   1/63 = 1 × 5/63 × 5 = 5/315
4. Add the two like fractions:
   147/315 + 5/315 = 147 + 5/315 = 152/315
5. So, 21/45 + 1/63 = 152/315

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