Answers

Add 21/20 and 25/70

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

21/20 + 25/70 is 197/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   21/20 = 21 × 7/20 × 7 = 147/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   25/70 = 25 × 2/70 × 2 = 50/140
4. Add the two like fractions:
   147/140 + 50/140 = 147 + 50/140 = 197/140
5. So, 21/20 + 25/70 = 197/140
   In mixed form: 157/140

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