Subtract 10/49 from 20/90
20/90 - 10/49 is 8/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
20/90 = 20 × 49/90 × 49 = 980/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
10/49 = 10 × 90/49 × 90 = 900/4410 - Subtract the two like fractions:
980/4410 - 900/4410 = 980 - 900/4410 = 80/4410 - After reducing the fraction, the answer is 8/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90-10/49 20/90-20/49 20/90-10/98 60/90-10/49 20/90-30/49 20/90-50/49 20/90-70/49