Add 12/15 and 1/20
12/15 + 1/20 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
12/15 = 12 × 4/15 × 4 = 48/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
1/20 = 1 × 3/20 × 3 = 3/60 - Add the two like fractions:
48/60 + 3/60 = 48 + 3/60 = 51/60 - 51/60 simplified gives 17/20
- So, 12/15 + 1/20 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+1/20 12/15+2/20 12/30+1/20 12/15+1/40 36/15+1/20 12/15+3/20 12/45+1/20 12/15+1/60 60/15+1/20 12/15+5/20 12/75+1/20 84/15+1/20 12/15+7/20