Answers

Add 90/63 and 21/10

1^st number: 1 27/63, 2^nd number: 2 1/10

90/63 + 21/10 is 247/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 10 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   90/63 = 90 × 10/63 × 10 = 900/630
3. Likewise, for the 2nd fraction, since 10 × 63 = 630,
   21/10 = 21 × 63/10 × 63 = 1323/630
4. Add the two like fractions:
   900/630 + 1323/630 = 900 + 1323/630 = 2223/630
5. 2223/630 simplified gives 247/70
6. So, 90/63 + 21/10 = 247/70
   In mixed form: 337/70

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