Subtract 80/36 from 4/80
1st number: 4/80, 2nd number: 2 8/36
4/80 - 80/36 is -391/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 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 36 × 20 = 720,
80/36 = 80 × 20/36 × 20 = 1600/720 - Subtract the two like fractions:
36/720 - 1600/720 = 36 - 1600/720 = -1564/720 - After reducing the fraction, the answer is -391/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/80-80/36 4/80-80/72 12/80-80/36 20/80-80/36 28/80-80/36