Add 27/20 and 64/10
1st number: 1 7/20, 2nd number: 6 4/10
27/20 + 64/10 is 31/4.
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,
27/20 = 27 × 1/20 × 1 = 27/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
64/10 = 64 × 2/10 × 2 = 128/20 - Add the two like fractions:
27/20 + 128/20 = 27 + 128/20 = 155/20 - 155/20 simplified gives 31/4
- So, 27/20 + 64/10 = 31/4
In mixed form: 73/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20+64/10 27/40+64/10 27/20+64/20 81/20+64/10 27/60+64/10 27/20+64/30 27/20+64/50 27/20+64/70