Answers

Add 7/18 and 75/21

1^st number: 7/18, 2^nd number: 3 12/21

7/18 + 75/21 is 499/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 21 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   7/18 = 7 × 7/18 × 7 = 49/126
3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
   75/21 = 75 × 6/21 × 6 = 450/126
4. Add the two like fractions:
   49/126 + 450/126 = 49 + 450/126 = 499/126
5. So, 7/18 + 75/21 = 499/126
   In mixed form: 3121/126

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