Add 54/81 and 90/60
1st number: 54/81, 2nd number: 1 30/60
54/81 + 90/60 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 60 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
54/81 = 54 × 20/81 × 20 = 1080/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
90/60 = 90 × 27/60 × 27 = 2430/1620 - Add the two like fractions:
1080/1620 + 2430/1620 = 1080 + 2430/1620 = 3510/1620 - 3510/1620 simplified gives 13/6
- So, 54/81 + 90/60 = 13/6
In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: