Subtract 7/40 from 72/98
72/98 - 7/40 is 1097/1960.
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,
72/98 = 72 × 20/98 × 20 = 1440/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
7/40 = 7 × 49/40 × 49 = 343/1960 - Subtract the two like fractions:
1440/1960 - 343/1960 = 1440 - 343/1960 = 1097/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/98-14/40 72/98-7/80 72/98-21/40 72/98-35/40 72/98-49/40