Subtract 21/50 from 18/48
18/48 - 21/50 is -9/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 50 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 48 × 25 = 1200,
18/48 = 18 × 25/48 × 25 = 450/1200 - Likewise, for the 2nd fraction, since 50 × 24 = 1200,
21/50 = 21 × 24/50 × 24 = 504/1200 - Subtract the two like fractions:
450/1200 - 504/1200 = 450 - 504/1200 = -54/1200 - After reducing the fraction, the answer is -9/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/48-21/50 18/48-42/50 18/96-21/50 54/48-21/50 18/48-63/50 90/48-21/50