Add 28/12 and 6/90
1st number: 2 4/12, 2nd number: 6/90
28/12 + 6/90 is 12/5.
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,
6/90 = 6 × 2/90 × 2 = 12/180 - Add the two like fractions:
420/180 + 12/180 = 420 + 12/180 = 432/180 - 432/180 simplified gives 12/5
- So, 28/12 + 6/90 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+6/90 28/12+12/90 28/24+6/90 84/12+6/90 28/12+18/90 28/36+6/90 28/12+30/90 28/60+6/90 28/12+42/90 28/84+6/90