Answers

Add 80/49 and 42/20

1^st number: 1 31/49, 2^nd number: 2 2/20

80/49 + 42/20 is 1829/490.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 49 × 20 = 980,
   80/49 = 80 × 20/49 × 20 = 1600/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   42/20 = 42 × 49/20 × 49 = 2058/980
4. Add the two like fractions:
   1600/980 + 2058/980 = 1600 + 2058/980 = 3658/980
5. 3658/980 simplified gives 1829/490
6. So, 80/49 + 42/20 = 1829/490
   In mixed form: 3359/490

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