Subtract 5/32 from 21/30
21/30 - 5/32 is 87/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 30 × 16 = 480,
21/30 = 21 × 16/30 × 16 = 336/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
5/32 = 5 × 15/32 × 15 = 75/480 - Subtract the two like fractions:
336/480 - 75/480 = 336 - 75/480 = 261/480 - After reducing the fraction, the answer is 87/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30-5/32 21/30-10/32 21/60-5/32 21/30-5/64 63/30-5/32 21/30-15/32 21/90-5/32 21/30-5/96 21/30-25/32 21/30-35/32