Add 81/90 and 60/45
1st number: 81/90, 2nd number: 1 15/45
81/90 + 60/45 is 67/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
60/45 = 60 × 2/45 × 2 = 120/90 - Add the two like fractions:
81/90 + 120/90 = 81 + 120/90 = 201/90 - 201/90 simplified gives 67/30
- So, 81/90 + 60/45 = 67/30
In mixed form: 27/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+60/90