Subtract 8/49 from 20/40
20/40 - 8/49 is 33/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 49 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
20/40 = 20 × 49/40 × 49 = 980/1960 - Likewise, for the 2nd fraction, since 49 × 40 = 1960,
8/49 = 8 × 40/49 × 40 = 320/1960 - Subtract the two like fractions:
980/1960 - 320/1960 = 980 - 320/1960 = 660/1960 - After reducing the fraction, the answer is 33/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-16/49 20/80-8/49 20/40-8/98 60/40-8/49 20/40-24/49 20/40-40/49 20/40-56/49