Subtract 10/18 from 4/80
4/80 - 10/18 is -91/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
4/80 = 4 × 9/80 × 9 = 36/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
10/18 = 10 × 40/18 × 40 = 400/720 - Subtract the two like fractions:
36/720 - 400/720 = 36 - 400/720 = -364/720 - After reducing the fraction, the answer is -91/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/80-10/18 4/80-20/18 4/80-10/36 12/80-10/18 4/80-30/18 4/80-10/54 20/80-10/18 4/80-50/18 4/80-10/90 28/80-10/18 4/80-70/18