Subtract 7/30 from 20/49
20/49 - 7/30 is 257/1470.
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,
20/49 = 20 × 30/49 × 30 = 600/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
7/30 = 7 × 49/30 × 49 = 343/1470 - Subtract the two like fractions:
600/1470 - 343/1470 = 600 - 343/1470 = 257/1470
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49-7/30 20/49-14/30 20/98-7/30 20/49-7/60 60/49-7/30 20/49-21/30 20/49-7/90 20/49-35/30 20/49-49/30