Subtract 7/40 from 3/50
3/50 - 7/40 is -23/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 40 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 50 × 4 = 200,
3/50 = 3 × 4/50 × 4 = 12/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
7/40 = 7 × 5/40 × 5 = 35/200 - Subtract the two like fractions:
12/200 - 35/200 = 12 - 35/200 = -23/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/50-7/40 3/50-14/40 3/50-7/80 9/50-7/40 3/50-21/40 15/50-7/40 3/50-35/40 21/50-7/40 3/50-49/40