Subtract 6/12 from 4/40
4/40 - 6/12 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
4/40 = 4 × 3/40 × 3 = 12/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
6/12 = 6 × 10/12 × 10 = 60/120 - Subtract the two like fractions:
12/120 - 60/120 = 12 - 60/120 = -48/120 - After reducing the fraction, the answer is -2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40-6/12 4/80-6/12 4/40-6/24 12/40-6/12 4/40-18/12 4/40-6/36 20/40-6/12 4/40-30/12 4/40-6/60 28/40-6/12 4/40-42/12 4/40-6/84