Answers

Add 81/98 and 45/20

1^st number: 81/98, 2^nd number: 2 5/20

81/98 + 45/20 is 603/196.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 98 × 10 = 980,
   81/98 = 81 × 10/98 × 10 = 810/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   45/20 = 45 × 49/20 × 49 = 2205/980
4. Add the two like fractions:
   810/980 + 2205/980 = 810 + 2205/980 = 3015/980
5. 3015/980 simplified gives 603/196
6. So, 81/98 + 45/20 = 603/196
   In mixed form: 315/196

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