Subtract 20/90 from 36/98
36/98 - 20/90 is 64/441.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 98 × 45 = 4410,
36/98 = 36 × 45/98 × 45 = 1620/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
20/90 = 20 × 49/90 × 49 = 980/4410 - Subtract the two like fractions:
1620/4410 - 980/4410 = 1620 - 980/4410 = 640/4410 - After reducing the fraction, the answer is 64/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/98-20/90 36/98-40/90 36/98-60/90