Answers

Add 15/98 and 81/72

1^st number: 15/98, 2^nd number: 1 9/72

15/98 + 81/72 is 501/392.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 72 is 3528
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3528
2. For the 1st fraction, since 98 × 36 = 3528,
   15/98 = 15 × 36/98 × 36 = 540/3528
3. Likewise, for the 2nd fraction, since 72 × 49 = 3528,
   81/72 = 81 × 49/72 × 49 = 3969/3528
4. Add the two like fractions:
   540/3528 + 3969/3528 = 540 + 3969/3528 = 4509/3528
5. 4509/3528 simplified gives 501/392
6. So, 15/98 + 81/72 = 501/392
   In mixed form: 1109/392

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