Answers

Add 80/15 and 42/54

1^st number: 5 5/15, 2^nd number: 42/54

80/15 + 42/54 is 55/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 15 × 18 = 270,
   80/15 = 80 × 18/15 × 18 = 1440/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   42/54 = 42 × 5/54 × 5 = 210/270
4. Add the two like fractions:
   1440/270 + 210/270 = 1440 + 210/270 = 1650/270
5. 1650/270 simplified gives 55/9
6. So, 80/15 + 42/54 = 55/9
   In mixed form: 61/9

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