Subtract 9/16 from 9/40
9/40 - 9/16 is -27/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
9/40 = 9 × 2/40 × 2 = 18/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
9/16 = 9 × 5/16 × 5 = 45/80 - Subtract the two like fractions:
18/80 - 45/80 = 18 - 45/80 = -27/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40-9/16 9/40-18/16 9/80-9/16 9/40-9/32 27/40-9/16 9/40-27/16 9/40-9/48 45/40-9/16 9/40-45/16 9/40-9/80 63/40-9/16 9/40-63/16