Subtract 28/50 from 4/40
4/40 - 28/50 is -23/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
4/40 = 4 × 5/40 × 5 = 20/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
28/50 = 28 × 4/50 × 4 = 112/200 - Subtract the two like fractions:
20/200 - 112/200 = 20 - 112/200 = -92/200 - After reducing the fraction, the answer is -23/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40-28/50 4/40-56/50 4/80-28/50 12/40-28/50 4/40-84/50 20/40-28/50 28/40-28/50