Answers

Add 75/14 and 54/40

1^st number: 5 5/14, 2^nd number: 1 14/40

75/14 + 54/40 is 939/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 14 × 20 = 280,
   75/14 = 75 × 20/14 × 20 = 1500/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   54/40 = 54 × 7/40 × 7 = 378/280
4. Add the two like fractions:
   1500/280 + 378/280 = 1500 + 378/280 = 1878/280
5. 1878/280 simplified gives 939/140
6. So, 75/14 + 54/40 = 939/140
   In mixed form: 699/140

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