Answers

Add 54/40 and 15/70

1^st number: 1 14/40, 2^nd number: 15/70

54/40 + 15/70 is 219/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   54/40 = 54 × 7/40 × 7 = 378/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   15/70 = 15 × 4/70 × 4 = 60/280
4. Add the two like fractions:
   378/280 + 60/280 = 378 + 60/280 = 438/280
5. 438/280 simplified gives 219/140
6. So, 54/40 + 15/70 = 219/140
   In mixed form: 179/140

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