Answers

Add 7/21 and 54/20

1^st number: 7/21, 2^nd number: 2 14/20

7/21 + 54/20 is 91/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   7/21 = 7 × 20/21 × 20 = 140/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   54/20 = 54 × 21/20 × 21 = 1134/420
4. Add the two like fractions:
   140/420 + 1134/420 = 140 + 1134/420 = 1274/420
5. 1274/420 simplified gives 91/30
6. So, 7/21 + 54/20 = 91/30
   In mixed form: 31/30

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