Subtract 27/40 from 28/50
28/50 - 27/40 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,
28/50 = 28 × 4/50 × 4 = 112/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
27/40 = 27 × 5/40 × 5 = 135/200 - Subtract the two like fractions:
112/200 - 135/200 = 112 - 135/200 = -23/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/50-27/40 28/50-54/40 28/50-27/80 84/50-27/40 28/50-81/40