Add 28/90 and 54/18
1st number: 28/90, 2nd number: 3 0/18
28/90 + 54/18 is 149/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
54/18 = 54 × 5/18 × 5 = 270/90 - Add the two like fractions:
28/90 + 270/90 = 28 + 270/90 = 298/90 - 298/90 simplified gives 149/45
- So, 28/90 + 54/18 = 149/45
In mixed form: 314/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+54/18 28/90+54/36 84/90+54/18 28/90+54/90