Subtract 4/45 from 20/32
20/32 - 4/45 is 193/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 45 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
20/32 = 20 × 45/32 × 45 = 900/1440 - Likewise, for the 2nd fraction, since 45 × 32 = 1440,
4/45 = 4 × 32/45 × 32 = 128/1440 - Subtract the two like fractions:
900/1440 - 128/1440 = 900 - 128/1440 = 772/1440 - After reducing the fraction, the answer is 193/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/32-4/45 20/32-8/45 20/64-4/45 20/32-4/90 60/32-4/45 20/32-12/45 20/96-4/45 20/32-20/45 20/32-28/45