Subtract 3/40 from 18/98
18/98 - 3/40 is 213/1960.
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,
18/98 = 18 × 20/98 × 20 = 360/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
3/40 = 3 × 49/40 × 49 = 147/1960 - Subtract the two like fractions:
360/1960 - 147/1960 = 360 - 147/1960 = 213/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/98-3/40 18/98-6/40 18/98-3/80 54/98-3/40 18/98-9/40 90/98-3/40 18/98-15/40 18/98-21/40