Subtract 27/40 from 9/49
9/49 - 27/40 is -963/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 49 × 40 = 1960,
9/49 = 9 × 40/49 × 40 = 360/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
27/40 = 27 × 49/40 × 49 = 1323/1960 - Subtract the two like fractions:
360/1960 - 1323/1960 = 360 - 1323/1960 = -963/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/49-27/40 9/49-54/40 9/98-27/40 9/49-27/80 27/49-27/40 9/49-81/40 45/49-27/40 63/49-27/40