Subtract 25/10 from 75/27, Solve 2 21/27

Subtract 25/10 from 75/27

1^st number: 2 21/27, 2^nd number: 2 5/10

75/27 - 25/10 is 5/18.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 10 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 27 × 10 = 270,
75/27 = 75 × 10/27 × 10 = 750/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
25/10 = 25 × 27/10 × 27 = 675/270
Subtract the two like fractions:
750/270 - 675/270 = 750 - 675/270 = 75/270
After reducing the fraction, the answer is 5/18

MathStep (Works offline)

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