Subtract 18/32 from 10/80
10/80 - 18/32 is -7/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 80 × 2 = 160,
10/80 = 10 × 2/80 × 2 = 20/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
18/32 = 18 × 5/32 × 5 = 90/160 - Subtract the two like fractions:
20/160 - 90/160 = 20 - 90/160 = -70/160 - After reducing the fraction, the answer is -7/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-18/32 10/80-36/32 10/80-18/64 30/80-18/32 10/80-54/32 10/80-18/96 50/80-18/32 10/80-90/32 70/80-18/32