Add 15/18 and 8/20
15/18 + 8/20 is 37/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
15/18 = 15 × 10/18 × 10 = 150/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Add the two like fractions:
150/180 + 72/180 = 150 + 72/180 = 222/180 - 222/180 simplified gives 37/30
- So, 15/18 + 8/20 = 37/30
In mixed form: 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+8/20 15/18+16/20 15/36+8/20 15/18+8/40 45/18+8/20 15/18+24/20 15/54+8/20 15/18+8/60 75/18+8/20 15/18+40/20 15/90+8/20 15/18+56/20