Subtract 6/9 from 27/10, Solve 2 7/10

Subtract 6/9 from 27/10

1^st number: 2 7/10, 2^nd number: 6/9

27/10 - 6/9 is 61/30.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 10 × 9 = 90,
27/10 = 27 × 9/10 × 9 = 243/90
Likewise, for the 2nd fraction, since 9 × 10 = 90,
6/9 = 6 × 10/9 × 10 = 60/90
Subtract the two like fractions:
243/90 - 60/90 = 243 - 60/90 = 183/90
After reducing the fraction, the answer is 61/30
In mixed form: 21/30

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad