Add 6/45 and 18/20
6/45 + 18/20 is 31/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
6/45 = 6 × 4/45 × 4 = 24/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
18/20 = 18 × 9/20 × 9 = 162/180 - Add the two like fractions:
24/180 + 162/180 = 24 + 162/180 = 186/180 - 186/180 simplified gives 31/30
- So, 6/45 + 18/20 = 31/30
In mixed form: 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/45+18/20 6/45+36/20 6/90+18/20 6/45+18/40 18/45+18/20 6/45+54/20 6/45+18/60 30/45+18/20 6/45+90/20 42/45+18/20