Answers

Add 84/8 and 54/15

1^st number: 10 4/8, 2^nd number: 3 9/15

84/8 + 54/15 is 141/10.

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,
   84/8 = 84 × 15/8 × 15 = 1260/120
3. Likewise, for the 2nd fraction, since 15 × 8 = 120,
   54/15 = 54 × 8/15 × 8 = 432/120
4. Add the two like fractions:
   1260/120 + 432/120 = 1260 + 432/120 = 1692/120
5. 1692/120 simplified gives 141/10
6. So, 84/8 + 54/15 = 141/10
   In mixed form: 141/10

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