Subtract 21/16 from 3/75, Solve 3/75

Subtract 21/16 from 3/75

1^st number: 3/75, 2^nd number: 1 5/16

3/75 - 21/16 is -509/400.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 16 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 75 × 16 = 1200,
3/75 = 3 × 16/75 × 16 = 48/1200
Likewise, for the 2nd fraction, since 16 × 75 = 1200,
21/16 = 21 × 75/16 × 75 = 1575/1200
Subtract the two like fractions:
48/1200 - 1575/1200 = 48 - 1575/1200 = -1527/1200
After reducing the fraction, the answer is -509/400

MathStep (Works offline)

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