Answers

Add 1/70 and 25/21

1^st number: 1/70, 2^nd number: 1 4/21

1/70 + 25/21 is 253/210.

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,
   1/70 = 1 × 3/70 × 3 = 3/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   25/21 = 25 × 10/21 × 10 = 250/210
4. Add the two like fractions:
   3/210 + 250/210 = 3 + 250/210 = 253/210
5. So, 1/70 + 25/21 = 253/210
   In mixed form: 143/210

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