Answers

Add 75/21 and 56/45

1^st number: 3 12/21, 2^nd number: 1 11/45

75/21 + 56/45 is 1517/315.

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,
   75/21 = 75 × 15/21 × 15 = 1125/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   56/45 = 56 × 7/45 × 7 = 392/315
4. Add the two like fractions:
   1125/315 + 392/315 = 1125 + 392/315 = 1517/315
5. So, 75/21 + 56/45 = 1517/315
   In mixed form: 4257/315

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