Answers

Add 25/21 and 98/70

1^st number: 1 4/21, 2^nd number: 1 28/70

25/21 + 98/70 is 272/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   25/21 = 25 × 10/21 × 10 = 250/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   98/70 = 98 × 3/70 × 3 = 294/210
4. Add the two like fractions:
   250/210 + 294/210 = 250 + 294/210 = 544/210
5. 544/210 simplified gives 272/105
6. So, 25/21 + 98/70 = 272/105
   In mixed form: 262/105

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