Subtract 21/36 from 3/75
3/75 - 21/36 is -163/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 36 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 75 × 12 = 900,
3/75 = 3 × 12/75 × 12 = 36/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
21/36 = 21 × 25/36 × 25 = 525/900 - Subtract the two like fractions:
36/900 - 525/900 = 36 - 525/900 = -489/900 - After reducing the fraction, the answer is -163/300
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/75-21/36 3/75-42/36 3/75-21/72 9/75-21/36 3/75-63/36 15/75-21/36 21/75-21/36