Answers

Add 98/30 and 72/21

1^st number: 3 8/30, 2^nd number: 3 9/21

98/30 + 72/21 is 703/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 30 × 7 = 210,
   98/30 = 98 × 7/30 × 7 = 686/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   72/21 = 72 × 10/21 × 10 = 720/210
4. Add the two like fractions:
   686/210 + 720/210 = 686 + 720/210 = 1406/210
5. 1406/210 simplified gives 703/105
6. So, 98/30 + 72/21 = 703/105
   In mixed form: 673/105

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