Subtract 15/40 from 7/50
7/50 - 15/40 is -47/200.
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,
7/50 = 7 × 4/50 × 4 = 28/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
15/40 = 15 × 5/40 × 5 = 75/200 - Subtract the two like fractions:
28/200 - 75/200 = 28 - 75/200 = -47/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/50-15/40 7/50-30/40 7/50-15/80 21/50-15/40 7/50-45/40 35/50-15/40 7/50-75/40 49/50-15/40