Subtract 20/90 from 5/32
5/32 - 20/90 is -19/288.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
5/32 = 5 × 45/32 × 45 = 225/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
20/90 = 20 × 16/90 × 16 = 320/1440 - Subtract the two like fractions:
225/1440 - 320/1440 = 225 - 320/1440 = -95/1440 - After reducing the fraction, the answer is -19/288
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/32-20/90 5/32-40/90 5/64-20/90 15/32-20/90 5/32-60/90 5/96-20/90 25/32-20/90 35/32-20/90