Add 20/15 and 6/4
1st number: 1 5/15, 2nd number: 1 2/4
20/15 + 6/4 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
6/4 = 6 × 15/4 × 15 = 90/60 - Add the two like fractions:
80/60 + 90/60 = 80 + 90/60 = 170/60 - 170/60 simplified gives 17/6
- So, 20/15 + 6/4 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+6/4 20/15+12/4 20/30+6/4 20/15+6/8 60/15+6/4 20/15+18/4 20/45+6/4 20/15+6/12 20/15+30/4 20/75+6/4 20/15+6/20 20/15+42/4 20/15+6/28