Add 5/12 and 7/90
5/12 + 7/90 is 89/180.
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,
5/12 = 5 × 15/12 × 15 = 75/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Add the two like fractions:
75/180 + 14/180 = 75 + 14/180 = 89/180 - So, 5/12 + 7/90 = 89/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/12+7/90 5/12+14/90 5/24+7/90 15/12+7/90 5/12+21/90 5/36+7/90 25/12+7/90 5/12+35/90 5/60+7/90 35/12+7/90 5/12+49/90 5/84+7/90