Answers

Add 70/30 and 21/63

1^st number: 2 10/30, 2^nd number: 21/63

70/30 + 21/63 is 8/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 30 × 21 = 630,
   70/30 = 70 × 21/30 × 21 = 1470/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   21/63 = 21 × 10/63 × 10 = 210/630
4. Add the two like fractions:
   1470/630 + 210/630 = 1470 + 210/630 = 1680/630
5. 1680/630 simplified gives 8/3
6. So, 70/30 + 21/63 = 8/3
   In mixed form: 22/3

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