Subtract 18/90 from 56/98
56/98 - 18/90 is 13/35.
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,
56/98 = 56 × 45/98 × 45 = 2520/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
18/90 = 18 × 49/90 × 49 = 882/4410 - Subtract the two like fractions:
2520/4410 - 882/4410 = 2520 - 882/4410 = 1638/4410 - After reducing the fraction, the answer is 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/98-36/90 56/98-54/90