Add 12/18 and 2/90
12/18 + 2/90 is 31/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
2/90 = 2 × 1/90 × 1 = 2/90 - Add the two like fractions:
60/90 + 2/90 = 60 + 2/90 = 62/90 - 62/90 simplified gives 31/45
- So, 12/18 + 2/90 = 31/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+2/90 12/18+4/90 12/36+2/90 36/18+2/90 12/18+6/90 12/54+2/90 60/18+2/90 12/18+10/90 12/90+2/90 84/18+2/90 12/18+14/90