Answers

Add 70/63 and 21/10

1^st number: 1 7/63, 2^nd number: 2 1/10

70/63 + 21/10 is 289/90.

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,
   70/63 = 70 × 10/63 × 10 = 700/630
3. Likewise, for the 2nd fraction, since 10 × 63 = 630,
   21/10 = 21 × 63/10 × 63 = 1323/630
4. Add the two like fractions:
   700/630 + 1323/630 = 700 + 1323/630 = 2023/630
5. 2023/630 simplified gives 289/90
6. So, 70/63 + 21/10 = 289/90
   In mixed form: 319/90

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