Subtract 28/32 from 21/5
1st number: 4 1/5, 2nd number: 28/32
21/5 - 28/32 is 133/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 5 × 32 = 160,
21/5 = 21 × 32/5 × 32 = 672/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
28/32 = 28 × 5/32 × 5 = 140/160 - Subtract the two like fractions:
672/160 - 140/160 = 672 - 140/160 = 532/160 - After reducing the fraction, the answer is 133/40
- In mixed form: 313/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-28/32 21/5-56/32 21/10-28/32 21/5-28/64 63/5-28/32 21/5-84/32 21/15-28/32 21/5-28/96 21/25-28/32 21/35-28/32