Answers

Add 2/21 and 72/54

1^st number: 2/21, 2^nd number: 1 18/54

2/21 + 72/54 is 10/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 21 × 18 = 378,
   2/21 = 2 × 18/21 × 18 = 36/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   72/54 = 72 × 7/54 × 7 = 504/378
4. Add the two like fractions:
   36/378 + 504/378 = 36 + 504/378 = 540/378
5. 540/378 simplified gives 10/7
6. So, 2/21 + 72/54 = 10/7
   In mixed form: 13/7

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