Answers

Add 98/8 and 54/15

1^st number: 12 2/8, 2^nd number: 3 9/15

98/8 + 54/15 is 317/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 15 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 8 × 15 = 120,
   98/8 = 98 × 15/8 × 15 = 1470/120
3. Likewise, for the 2nd fraction, since 15 × 8 = 120,
   54/15 = 54 × 8/15 × 8 = 432/120
4. Add the two like fractions:
   1470/120 + 432/120 = 1470 + 432/120 = 1902/120
5. 1902/120 simplified gives 317/20
6. So, 98/8 + 54/15 = 317/20
   In mixed form: 1517/20

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