Answers

Add 2/63 and 21/70

2/63 + 21/70 is 209/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   2/63 = 2 × 10/63 × 10 = 20/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   21/70 = 21 × 9/70 × 9 = 189/630
4. Add the two like fractions:
   20/630 + 189/630 = 20 + 189/630 = 209/630
5. So, 2/63 + 21/70 = 209/630

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