Subtract 42/32 from 21/16
1st number: 1 5/16, 2nd number: 1 10/32
21/16 - 42/32 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 32 is 32
Next, find the equivalent fraction of both fractional numbers with denominator 32 - For the 1st fraction, since 16 × 2 = 32,
21/16 = 21 × 2/16 × 2 = 42/32 - Likewise, for the 2nd fraction, since 32 × 1 = 32,
42/32 = 42 × 1/32 × 1 = 42/32 - Subtract the two like fractions:
42/32 - 42/32 = 42 - 42/32 = 0/32 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16-42/32 21/16-84/32 21/32-42/32 21/16-42/64 63/16-42/32 21/48-42/32 21/16-42/96 21/80-42/32