Answers

Add 35/28 and 72/20

1^st number: 1 7/28, 2^nd number: 3 12/20

35/28 + 72/20 is 97/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   35/28 = 35 × 5/28 × 5 = 175/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   72/20 = 72 × 7/20 × 7 = 504/140
4. Add the two like fractions:
   175/140 + 504/140 = 175 + 504/140 = 679/140
5. 679/140 simplified gives 97/20
6. So, 35/28 + 72/20 = 97/20
   In mixed form: 417/20

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