Subtract 6/30 from 21/49
21/49 - 6/30 is 8/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
21/49 = 21 × 30/49 × 30 = 630/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
6/30 = 6 × 49/30 × 49 = 294/1470 - Subtract the two like fractions:
630/1470 - 294/1470 = 630 - 294/1470 = 336/1470 - After reducing the fraction, the answer is 8/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/49-6/30 21/49-12/30 21/98-6/30 21/49-6/60 63/49-6/30 21/49-18/30 21/49-6/90 21/49-42/30