Answers

Add 28/70 and 49/20

1^st number: 28/70, 2^nd number: 2 9/20

28/70 + 49/20 is 57/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   28/70 = 28 × 2/70 × 2 = 56/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   49/20 = 49 × 7/20 × 7 = 343/140
4. Add the two like fractions:
   56/140 + 343/140 = 56 + 343/140 = 399/140
5. 399/140 simplified gives 57/20
6. So, 28/70 + 49/20 = 57/20
   In mixed form: 217/20

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