Subtract 20/16 from 3/40
1st number: 3/40, 2nd number: 1 4/16
3/40 - 20/16 is -47/40.
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,
3/40 = 3 × 2/40 × 2 = 6/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
20/16 = 20 × 5/16 × 5 = 100/80 - Subtract the two like fractions:
6/80 - 100/80 = 6 - 100/80 = -94/80 - After reducing the fraction, the answer is -47/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40-20/16 3/40-40/16 3/80-20/16 3/40-20/32 9/40-20/16 3/40-60/16 3/40-20/48 15/40-20/16 3/40-20/80 21/40-20/16