Add 15/80 and 80/81
15/80 + 80/81 is 1523/1296.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 81 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 80 × 81 = 6480,
15/80 = 15 × 81/80 × 81 = 1215/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
80/81 = 80 × 80/81 × 80 = 6400/6480 - Add the two like fractions:
1215/6480 + 6400/6480 = 1215 + 6400/6480 = 7615/6480 - 7615/6480 simplified gives 1523/1296
- So, 15/80 + 80/81 = 1523/1296
In mixed form: 1227/1296
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