Answers

Add 28/21 and 70/50

1^st number: 1 7/21, 2^nd number: 1 20/50

28/21 + 70/50 is 41/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 50 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 21 × 50 = 1050,
   28/21 = 28 × 50/21 × 50 = 1400/1050
3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
   70/50 = 70 × 21/50 × 21 = 1470/1050
4. Add the two like fractions:
   1400/1050 + 1470/1050 = 1400 + 1470/1050 = 2870/1050
5. 2870/1050 simplified gives 41/15
6. So, 28/21 + 70/50 = 41/15
   In mixed form: 211/15

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