Add 14/28 and 80/90
14/28 + 80/90 is 25/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
14/28 = 14 × 45/28 × 45 = 630/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
80/90 = 80 × 14/90 × 14 = 1120/1260 - Add the two like fractions:
630/1260 + 1120/1260 = 630 + 1120/1260 = 1750/1260 - 1750/1260 simplified gives 25/18
- So, 14/28 + 80/90 = 25/18
In mixed form: 17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/56+80/90 42/28+80/90 14/84+80/90 70/28+80/90 98/28+80/90