Add 28/12 and 14/90
1st number: 2 4/12, 2nd number: 14/90
28/12 + 14/90 is 112/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
28/12 = 28 × 15/12 × 15 = 420/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
14/90 = 14 × 2/90 × 2 = 28/180 - Add the two like fractions:
420/180 + 28/180 = 420 + 28/180 = 448/180 - 448/180 simplified gives 112/45
- So, 28/12 + 14/90 = 112/45
In mixed form: 222/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+14/90 28/12+28/90 28/24+14/90 84/12+14/90 28/12+42/90 28/36+14/90 28/12+70/90 28/60+14/90 28/12+98/90 28/84+14/90