Subtract 7/16 from 21/50
21/50 - 7/16 is -7/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 16 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 50 × 8 = 400,
21/50 = 21 × 8/50 × 8 = 168/400 - Likewise, for the 2nd fraction, since 16 × 25 = 400,
7/16 = 7 × 25/16 × 25 = 175/400 - Subtract the two like fractions:
168/400 - 175/400 = 168 - 175/400 = -7/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-7/16 21/50-14/16 21/50-7/32 63/50-7/16 21/50-21/16 21/50-7/48 21/50-35/16 21/50-7/80 21/50-49/16