Subtract 5/20 from 12/49
12/49 - 5/20 is -1/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
12/49 = 12 × 20/49 × 20 = 240/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
5/20 = 5 × 49/20 × 49 = 245/980 - Subtract the two like fractions:
240/980 - 245/980 = 240 - 245/980 = -5/980 - After reducing the fraction, the answer is -1/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/49-5/20 12/49-10/20 12/98-5/20 12/49-5/40 36/49-5/20 12/49-15/20 12/49-5/60 60/49-5/20 12/49-25/20 84/49-5/20 12/49-35/20