Answers

Add 42/20 and 45/98

1^st number: 2 2/20, 2^nd number: 45/98

42/20 + 45/98 is 627/245.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 98 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 20 × 49 = 980,
   42/20 = 42 × 49/20 × 49 = 2058/980
3. Likewise, for the 2nd fraction, since 98 × 10 = 980,
   45/98 = 45 × 10/98 × 10 = 450/980
4. Add the two like fractions:
   2058/980 + 450/980 = 2058 + 450/980 = 2508/980
5. 2508/980 simplified gives 627/245
6. So, 42/20 + 45/98 = 627/245
   In mixed form: 2137/245

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