Add 6/20 and 81/45
1st number: 6/20, 2nd number: 1 36/45
6/20 + 81/45 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
6/20 = 6 × 9/20 × 9 = 54/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
81/45 = 81 × 4/45 × 4 = 324/180 - Add the two like fractions:
54/180 + 324/180 = 54 + 324/180 = 378/180 - 378/180 simplified gives 21/10
- So, 6/20 + 81/45 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/20+81/45 6/40+81/45 6/20+81/90 18/20+81/45 6/60+81/45 30/20+81/45 42/20+81/45