Add 3/18 and 20/30
3/18 + 20/30 is 5/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Add the two like fractions:
15/90 + 60/90 = 15 + 60/90 = 75/90 - 75/90 simplified gives 5/6
- So, 3/18 + 20/30 = 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+20/30 3/18+40/30 3/36+20/30 3/18+20/60 9/18+20/30 3/18+60/30 3/54+20/30 3/18+20/90 15/18+20/30 3/90+20/30 21/18+20/30