Add 15/18 and 4/5
15/18 + 4/5 is 49/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 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 5 × 18 = 90,
4/5 = 4 × 18/5 × 18 = 72/90 - Add the two like fractions:
75/90 + 72/90 = 75 + 72/90 = 147/90 - 147/90 simplified gives 49/30
- So, 15/18 + 4/5 = 49/30
In mixed form: 119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+4/5 15/18+8/5 15/36+4/5 15/18+4/10 45/18+4/5 15/18+12/5 15/54+4/5 15/18+4/15 75/18+4/5 15/18+20/5 15/90+4/5 15/18+4/25 15/18+28/5 15/18+4/35