Subtract 42/50 from 15/98
15/98 - 42/50 is -1683/2450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 50 is 2450
Next, find the equivalent fraction of both fractional numbers with denominator 2450 - For the 1st fraction, since 98 × 25 = 2450,
15/98 = 15 × 25/98 × 25 = 375/2450 - Likewise, for the 2nd fraction, since 50 × 49 = 2450,
42/50 = 42 × 49/50 × 49 = 2058/2450 - Subtract the two like fractions:
375/2450 - 2058/2450 = 375 - 2058/2450 = -1683/2450
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/98-42/50 15/98-84/50 45/98-42/50 75/98-42/50