Add 60/18 and 72/20
1st number: 3 6/18, 2nd number: 3 12/20
60/18 + 72/20 is 104/15.
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,
60/18 = 60 × 10/18 × 10 = 600/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
72/20 = 72 × 9/20 × 9 = 648/180 - Add the two like fractions:
600/180 + 648/180 = 600 + 648/180 = 1248/180 - 1248/180 simplified gives 104/15
- So, 60/18 + 72/20 = 104/15
In mixed form: 614/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/36+72/20 60/18+72/40 60/54+72/20 60/18+72/60 60/90+72/20