Add 30/18 and 27/20
1st number: 1 12/18, 2nd number: 1 7/20
30/18 + 27/20 is 181/60.
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,
30/18 = 30 × 10/18 × 10 = 300/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
27/20 = 27 × 9/20 × 9 = 243/180 - Add the two like fractions:
300/180 + 243/180 = 300 + 243/180 = 543/180 - 543/180 simplified gives 181/60
- So, 30/18 + 27/20 = 181/60
In mixed form: 31/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+27/20 30/18+54/20 30/36+27/20 30/18+27/40 90/18+27/20 30/18+81/20 30/54+27/20 30/18+27/60 30/90+27/20