Subtract 25/15 from 27/2, Solve 13 1/2

Subtract 25/15 from 27/2

1^st number: 13 1/2, 2^nd number: 1 10/15

27/2 - 25/15 is 71/6.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 15 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 2 × 15 = 30,
27/2 = 27 × 15/2 × 15 = 405/30
Likewise, for the 2nd fraction, since 15 × 2 = 30,
25/15 = 25 × 2/15 × 2 = 50/30
Subtract the two like fractions:
405/30 - 50/30 = 405 - 50/30 = 355/30
After reducing the fraction, the answer is 71/6
In mixed form: 115/6

MathStep (Works offline)

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