Add 28/90 and 2/12
28/90 + 2/12 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
28/90 = 28 × 2/90 × 2 = 56/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
2/12 = 2 × 15/12 × 15 = 30/180 - Add the two like fractions:
56/180 + 30/180 = 56 + 30/180 = 86/180 - 86/180 simplified gives 43/90
- So, 28/90 + 2/12 = 43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+2/12 28/90+4/12 28/90+2/24 84/90+2/12 28/90+6/12 28/90+2/36 28/90+10/12 28/90+2/60 28/90+14/12 28/90+2/84