Answers

Add 75/21 and 54/7

1^st number: 3 12/21, 2^nd number: 7 5/7

75/21 + 54/7 is 79/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 7 is 21
   
   Next, find the equivalent fraction of both fractional numbers with denominator 21
2. For the 1st fraction, since 21 × 1 = 21,
   75/21 = 75 × 1/21 × 1 = 75/21
3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
   54/7 = 54 × 3/7 × 3 = 162/21
4. Add the two like fractions:
   75/21 + 162/21 = 75 + 162/21 = 237/21
5. 237/21 simplified gives 79/7
6. So, 75/21 + 54/7 = 79/7
   In mixed form: 112/7

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