Add 7/81 and 54/84
7/81 + 54/84 is 827/1134.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 84 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
7/81 = 7 × 28/81 × 28 = 196/2268 - Likewise, for the 2nd fraction, since 84 × 27 = 2268,
54/84 = 54 × 27/84 × 27 = 1458/2268 - Add the two like fractions:
196/2268 + 1458/2268 = 196 + 1458/2268 = 1654/2268 - 1654/2268 simplified gives 827/1134
- So, 7/81 + 54/84 = 827/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/81+54/84 21/81+54/84 35/81+54/84 49/81+54/84