Add 80/81 and 49/20
1st number: 80/81, 2nd number: 2 9/20
80/81 + 49/20 is 5569/1620.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
80/81 = 80 × 20/81 × 20 = 1600/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
49/20 = 49 × 81/20 × 81 = 3969/1620 - Add the two like fractions:
1600/1620 + 3969/1620 = 1600 + 3969/1620 = 5569/1620 - So, 80/81 + 49/20 = 5569/1620
In mixed form: 3709/1620
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