Add 54/30 and 7/81
1st number: 1 24/30, 2nd number: 7/81
54/30 + 7/81 is 764/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
54/30 = 54 × 27/30 × 27 = 1458/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
7/81 = 7 × 10/81 × 10 = 70/810 - Add the two like fractions:
1458/810 + 70/810 = 1458 + 70/810 = 1528/810 - 1528/810 simplified gives 764/405
- So, 54/30 + 7/81 = 764/405
In mixed form: 1359/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+14/81 54/60+7/81 54/30+21/81 54/90+7/81 54/30+35/81 54/30+49/81