Subtract 40/6 from 7/40
1st number: 7/40, 2nd number: 6 4/6
7/40 - 40/6 is -779/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Likewise, for the 2nd fraction, since 6 × 20 = 120,
40/6 = 40 × 20/6 × 20 = 800/120 - Subtract the two like fractions:
21/120 - 800/120 = 21 - 800/120 = -779/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40-40/6 7/40-80/6 7/80-40/6 7/40-40/12 21/40-40/6 7/40-40/18 35/40-40/6 7/40-40/30 49/40-40/6 7/40-40/42