Answers

Add 54/14 and 42/80

1^st number: 3 12/14, 2^nd number: 42/80

54/14 + 42/80 is 1227/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 14 × 40 = 560,
   54/14 = 54 × 40/14 × 40 = 2160/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   42/80 = 42 × 7/80 × 7 = 294/560
4. Add the two like fractions:
   2160/560 + 294/560 = 2160 + 294/560 = 2454/560
5. 2454/560 simplified gives 1227/280
6. So, 54/14 + 42/80 = 1227/280
   In mixed form: 4107/280

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