Subtract 3/49 from 20/28
20/28 - 3/49 is 32/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 49 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 28 × 7 = 196,
20/28 = 20 × 7/28 × 7 = 140/196 - Likewise, for the 2nd fraction, since 49 × 4 = 196,
3/49 = 3 × 4/49 × 4 = 12/196 - Subtract the two like fractions:
140/196 - 12/196 = 140 - 12/196 = 128/196 - After reducing the fraction, the answer is 32/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28-3/49 20/28-6/49 20/56-3/49 20/28-3/98 60/28-3/49 20/28-9/49 20/84-3/49 20/28-15/49 20/28-21/49