Answers

Add 42/40 and 42/80

1^st number: 1 2/40, 2^nd number: 42/80

42/40 + 42/80 is 63/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 40 × 2 = 80,
   42/40 = 42 × 2/40 × 2 = 84/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   42/80 = 42 × 1/80 × 1 = 42/80
4. Add the two like fractions:
   84/80 + 42/80 = 84 + 42/80 = 126/80
5. 126/80 simplified gives 63/40
6. So, 42/40 + 42/80 = 63/40
   In mixed form: 123/40

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