Subtract 4/40 from 4/7
4/7 - 4/40 is 33/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
4/7 = 4 × 40/7 × 40 = 160/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280 - Subtract the two like fractions:
160/280 - 28/280 = 160 - 28/280 = 132/280 - After reducing the fraction, the answer is 33/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-4/40 4/7-8/40 4/14-4/40 4/7-4/80 12/7-4/40 4/7-12/40 4/21-4/40 20/7-4/40 4/7-20/40 4/35-4/40 28/7-4/40 4/7-28/40 4/49-4/40