Answers

Add 42/40 and 21/54

1^st number: 1 2/40, 2^nd number: 21/54

42/40 + 21/54 is 259/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 54 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 40 × 27 = 1080,
   42/40 = 42 × 27/40 × 27 = 1134/1080
3. Likewise, for the 2nd fraction, since 54 × 20 = 1080,
   21/54 = 21 × 20/54 × 20 = 420/1080
4. Add the two like fractions:
   1134/1080 + 420/1080 = 1134 + 420/1080 = 1554/1080
5. 1554/1080 simplified gives 259/180
6. So, 42/40 + 21/54 = 259/180
   In mixed form: 179/180

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