Answers

Add 75/45 and 18/21

1^st number: 1 30/45, 2^nd number: 18/21

75/45 + 18/21 is 53/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 21 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   75/45 = 75 × 7/45 × 7 = 525/315
3. Likewise, for the 2nd fraction, since 21 × 15 = 315,
   18/21 = 18 × 15/21 × 15 = 270/315
4. Add the two like fractions:
   525/315 + 270/315 = 525 + 270/315 = 795/315
5. 795/315 simplified gives 53/21
6. So, 75/45 + 18/21 = 53/21
   In mixed form: 211/21

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