Add 81/98 and 7/20
81/98 + 7/20 is 1153/980.
Steps for adding fractions
- 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 - For the 1st fraction, since 98 × 10 = 980,
81/98 = 81 × 10/98 × 10 = 810/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Add the two like fractions:
810/980 + 343/980 = 810 + 343/980 = 1153/980 - So, 81/98 + 7/20 = 1153/980
In mixed form: 1173/980
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