Subtract 9/40 from 15/98
15/98 - 9/40 is -141/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
15/98 = 15 × 20/98 × 20 = 300/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
9/40 = 9 × 49/40 × 49 = 441/1960 - Subtract the two like fractions:
300/1960 - 441/1960 = 300 - 441/1960 = -141/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/98-9/40 15/98-18/40 15/98-9/80 45/98-9/40 15/98-27/40 75/98-9/40 15/98-45/40 15/98-63/40