Answers

Add 28/20 and 90/98

1^st number: 1 8/20, 2^nd number: 90/98

28/20 + 90/98 is 568/245.

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,
   28/20 = 28 × 49/20 × 49 = 1372/980
3. Likewise, for the 2nd fraction, since 98 × 10 = 980,
   90/98 = 90 × 10/98 × 10 = 900/980
4. Add the two like fractions:
   1372/980 + 900/980 = 1372 + 900/980 = 2272/980
5. 2272/980 simplified gives 568/245
6. So, 28/20 + 90/98 = 568/245
   In mixed form: 278/245

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