Answers

Add 42/40 and 84/56

1^st number: 1 2/40, 2^nd number: 1 28/56

42/40 + 84/56 is 51/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 56 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   42/40 = 42 × 7/40 × 7 = 294/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   84/56 = 84 × 5/56 × 5 = 420/280
4. Add the two like fractions:
   294/280 + 420/280 = 294 + 420/280 = 714/280
5. 714/280 simplified gives 51/20
6. So, 42/40 + 84/56 = 51/20
   In mixed form: 211/20

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