Add 90/81 and 5/60
1st number: 1 9/81, 2nd number: 5/60
90/81 + 5/60 is 43/36.
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,
90/81 = 90 × 20/81 × 20 = 1800/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
5/60 = 5 × 27/60 × 27 = 135/1620 - Add the two like fractions:
1800/1620 + 135/1620 = 1800 + 135/1620 = 1935/1620 - 1935/1620 simplified gives 43/36
- So, 90/81 + 5/60 = 43/36
In mixed form: 17/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/81+10/60 90/81+15/60 90/81+25/60 90/81+35/60