Answers

Add 28/21 and 35/45

1^st number: 1 7/21, 2^nd number: 35/45

28/21 + 35/45 is 19/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 21 × 15 = 315,
   28/21 = 28 × 15/21 × 15 = 420/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   35/45 = 35 × 7/45 × 7 = 245/315
4. Add the two like fractions:
   420/315 + 245/315 = 420 + 245/315 = 665/315
5. 665/315 simplified gives 19/9
6. So, 28/21 + 35/45 = 19/9
   In mixed form: 21/9

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