Add 81/20 and 27/10
1st number: 4 1/20, 2nd number: 2 7/10
81/20 + 27/10 is 27/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
81/20 = 81 × 1/20 × 1 = 81/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
27/10 = 27 × 2/10 × 2 = 54/20 - Add the two like fractions:
81/20 + 54/20 = 81 + 54/20 = 135/20 - 135/20 simplified gives 27/4
- So, 81/20 + 27/10 = 27/4
In mixed form: 63/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/20+54/10 81/40+27/10 81/20+27/20 81/20+81/10 81/60+27/10 81/20+27/30 81/20+27/50 81/20+27/70