Add 28/90 and 14/18
28/90 + 14/18 is 49/45.
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,
14/18 = 14 × 5/18 × 5 = 70/90 - Add the two like fractions:
28/90 + 70/90 = 28 + 70/90 = 98/90 - 98/90 simplified gives 49/45
- So, 28/90 + 14/18 = 49/45
In mixed form: 14/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+14/18 28/90+28/18 28/90+14/36 84/90+14/18 28/90+42/18 28/90+14/54 28/90+70/18 28/90+14/90 28/90+98/18