Answers

Add 7/70 and 63/21

1^st number: 7/70, 2^nd number: 3 0/21

7/70 + 63/21 is 31/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   7/70 = 7 × 3/70 × 3 = 21/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   63/21 = 63 × 10/21 × 10 = 630/210
4. Add the two like fractions:
   21/210 + 630/210 = 21 + 630/210 = 651/210
5. 651/210 simplified gives 31/10
6. So, 7/70 + 63/21 = 31/10
   In mixed form: 31/10

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