Subtract 3/16 from 7/40
7/40 - 3/16 is -1/80.
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,
7/40 = 7 × 2/40 × 2 = 14/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
3/16 = 3 × 5/16 × 5 = 15/80 - Subtract the two like fractions:
14/80 - 15/80 = 14 - 15/80 = -1/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40-3/16 7/40-6/16 7/80-3/16 7/40-3/32 21/40-3/16 7/40-9/16 7/40-3/48 35/40-3/16 7/40-15/16 7/40-3/80 49/40-3/16 7/40-21/16