Answers

Add 80/49 and 42/40

1^st number: 1 31/49, 2^nd number: 1 2/40

80/49 + 42/40 is 2629/980.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 40 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 49 × 40 = 1960,
   80/49 = 80 × 40/49 × 40 = 3200/1960
3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
   42/40 = 42 × 49/40 × 49 = 2058/1960
4. Add the two like fractions:
   3200/1960 + 2058/1960 = 3200 + 2058/1960 = 5258/1960
5. 5258/1960 simplified gives 2629/980
6. So, 80/49 + 42/40 = 2629/980
   In mixed form: 2669/980

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