Answers

Add 27/20 and 45/28

1^st number: 1 7/20, 2^nd number: 1 17/28

27/20 + 45/28 is 207/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   27/20 = 27 × 7/20 × 7 = 189/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   45/28 = 45 × 5/28 × 5 = 225/140
4. Add the two like fractions:
   189/140 + 225/140 = 189 + 225/140 = 414/140
5. 414/140 simplified gives 207/70
6. So, 27/20 + 45/28 = 207/70
   In mixed form: 267/70

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