Answers

Add 21/70 and 72/25

1^st number: 21/70, 2^nd number: 2 22/25

21/70 + 72/25 is 159/50.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 25 is 350
   
   Next, find the equivalent fraction of both fractional numbers with denominator 350
2. For the 1st fraction, since 70 × 5 = 350,
   21/70 = 21 × 5/70 × 5 = 105/350
3. Likewise, for the 2nd fraction, since 25 × 14 = 350,
   72/25 = 72 × 14/25 × 14 = 1008/350
4. Add the two like fractions:
   105/350 + 1008/350 = 105 + 1008/350 = 1113/350
5. 1113/350 simplified gives 159/50
6. So, 21/70 + 72/25 = 159/50
   In mixed form: 39/50

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