Add 5/12 and 8/90
5/12 + 8/90 is 91/180.
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,
8/90 = 8 × 2/90 × 2 = 16/180 - Add the two like fractions:
75/180 + 16/180 = 75 + 16/180 = 91/180 - So, 5/12 + 8/90 = 91/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/12+8/90 5/12+16/90 5/24+8/90 15/12+8/90 5/12+24/90 5/36+8/90 25/12+8/90 5/12+40/90 5/60+8/90 35/12+8/90 5/12+56/90 5/84+8/90