Answers

Add 72/4 and 98/21

1^st number: 18 0/4, 2^nd number: 4 14/21

72/4 + 98/21 is 68/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 4 × 21 = 84,
   72/4 = 72 × 21/4 × 21 = 1512/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   98/21 = 98 × 4/21 × 4 = 392/84
4. Add the two like fractions:
   1512/84 + 392/84 = 1512 + 392/84 = 1904/84
5. 1904/84 simplified gives 68/3
6. So, 72/4 + 98/21 = 68/3
   In mixed form: 222/3

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