Answers

Add 72/70 and 15/28

1^st number: 1 2/70, 2^nd number: 15/28

72/70 + 15/28 is 219/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   72/70 = 72 × 2/70 × 2 = 144/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   15/28 = 15 × 5/28 × 5 = 75/140
4. Add the two like fractions:
   144/140 + 75/140 = 144 + 75/140 = 219/140
5. So, 72/70 + 15/28 = 219/140
   In mixed form: 179/140

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