Subtract 35/18 from 21/75
1st number: 21/75, 2nd number: 1 17/18
21/75 - 35/18 is -749/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
21/75 = 21 × 6/75 × 6 = 126/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
35/18 = 35 × 25/18 × 25 = 875/450 - Subtract the two like fractions:
126/450 - 875/450 = 126 - 875/450 = -749/450
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-35/18 21/75-70/18 21/75-35/36 63/75-35/18 21/75-35/54 21/75-35/90