Add 54/3 and 90/81
1st number: 18 0/3, 2nd number: 1 9/81
54/3 + 90/81 is 172/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
54/3 = 54 × 27/3 × 27 = 1458/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
90/81 = 90 × 1/81 × 1 = 90/81 - Add the two like fractions:
1458/81 + 90/81 = 1458 + 90/81 = 1548/81 - 1548/81 simplified gives 172/9
- So, 54/3 + 90/81 = 172/9
In mixed form: 191/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/6+90/81 54/9+90/81 54/15+90/81 54/21+90/81