Add 80/81 and 16/20
80/81 + 16/20 is 724/405.
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,
16/20 = 16 × 81/20 × 81 = 1296/1620 - Add the two like fractions:
1600/1620 + 1296/1620 = 1600 + 1296/1620 = 2896/1620 - 2896/1620 simplified gives 724/405
- So, 80/81 + 16/20 = 724/405
In mixed form: 1319/405
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