Answers

Add 20/25 and 81/70

1^st number: 20/25, 2^nd number: 1 11/70

20/25 + 81/70 is 137/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 70 is 350
   
   Next, find the equivalent fraction of both fractional numbers with denominator 350
2. For the 1st fraction, since 25 × 14 = 350,
   20/25 = 20 × 14/25 × 14 = 280/350
3. Likewise, for the 2nd fraction, since 70 × 5 = 350,
   81/70 = 81 × 5/70 × 5 = 405/350
4. Add the two like fractions:
   280/350 + 405/350 = 280 + 405/350 = 685/350
5. 685/350 simplified gives 137/70
6. So, 20/25 + 81/70 = 137/70
   In mixed form: 167/70

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