Add 72/98 and 80/81
72/98 + 80/81 is 6836/3969.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 81 is 7938
Next, find the equivalent fraction of both fractional numbers with denominator 7938 - For the 1st fraction, since 98 × 81 = 7938,
72/98 = 72 × 81/98 × 81 = 5832/7938 - Likewise, for the 2nd fraction, since 81 × 98 = 7938,
80/81 = 80 × 98/81 × 98 = 7840/7938 - Add the two like fractions:
5832/7938 + 7840/7938 = 5832 + 7840/7938 = 13672/7938 - 13672/7938 simplified gives 6836/3969
- So, 72/98 + 80/81 = 6836/3969
In mixed form: 12867/3969
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