Subtract 6/70 from 21/75
21/75 - 6/70 is 34/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
21/75 = 21 × 14/75 × 14 = 294/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
6/70 = 6 × 15/70 × 15 = 90/1050 - Subtract the two like fractions:
294/1050 - 90/1050 = 294 - 90/1050 = 204/1050 - After reducing the fraction, the answer is 34/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-6/70 21/75-12/70 63/75-6/70 21/75-18/70 21/75-30/70 21/75-42/70