Subtract 3/84 from 30/75
30/75 - 3/84 is 51/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 75 × 28 = 2100,
30/75 = 30 × 28/75 × 28 = 840/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
3/84 = 3 × 25/84 × 25 = 75/2100 - Subtract the two like fractions:
840/2100 - 75/2100 = 840 - 75/2100 = 765/2100 - After reducing the fraction, the answer is 51/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/75-3/84 30/75-6/84 90/75-3/84 30/75-9/84 30/75-15/84 30/75-21/84