Add 15/18 and 1/30
15/18 + 1/30 is 13/15.
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,
15/18 = 15 × 5/18 × 5 = 75/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
1/30 = 1 × 3/30 × 3 = 3/90 - Add the two like fractions:
75/90 + 3/90 = 75 + 3/90 = 78/90 - 78/90 simplified gives 13/15
- So, 15/18 + 1/30 = 13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+1/30 15/18+2/30 15/36+1/30 15/18+1/60 45/18+1/30 15/18+3/30 15/54+1/30 15/18+1/90 75/18+1/30 15/18+5/30 15/90+1/30 15/18+7/30