Subtract 9/49 from 9/40
9/40 - 9/49 is 81/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 49 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
9/40 = 9 × 49/40 × 49 = 441/1960 - Likewise, for the 2nd fraction, since 49 × 40 = 1960,
9/49 = 9 × 40/49 × 40 = 360/1960 - Subtract the two like fractions:
441/1960 - 360/1960 = 441 - 360/1960 = 81/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40-9/49 9/40-18/49 9/80-9/49 9/40-9/98 27/40-9/49 9/40-27/49 45/40-9/49 9/40-45/49 63/40-9/49 9/40-63/49