Answers

Add 75/14 and 72/20

1^st number: 5 5/14, 2^nd number: 3 12/20

75/14 + 72/20 is 627/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 14 × 10 = 140,
   75/14 = 75 × 10/14 × 10 = 750/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   72/20 = 72 × 7/20 × 7 = 504/140
4. Add the two like fractions:
   750/140 + 504/140 = 750 + 504/140 = 1254/140
5. 1254/140 simplified gives 627/70
6. So, 75/14 + 72/20 = 627/70
   In mixed form: 867/70

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