Answers

Add 75/5 and 42/21

1^st number: 15 0/5, 2^nd number: 2 0/21

75/5 + 42/21 is 17/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 5 × 21 = 105,
   75/5 = 75 × 21/5 × 21 = 1575/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   42/21 = 42 × 5/21 × 5 = 210/105
4. Add the two like fractions:
   1575/105 + 210/105 = 1575 + 210/105 = 1785/105
5. 1785/105 simplified gives 17/1
6. So, 75/5 + 42/21 = 17/1

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