Subtract 10/98 from 42/90
42/90 - 10/98 is 268/735.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
42/90 = 42 × 49/90 × 49 = 2058/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
10/98 = 10 × 45/98 × 45 = 450/4410 - Subtract the two like fractions:
2058/4410 - 450/4410 = 2058 - 450/4410 = 1608/4410 - After reducing the fraction, the answer is 268/735
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90-10/98 42/90-20/98 42/90-30/98 42/90-50/98 42/90-70/98