Subtract 16/18 from 4/80
4/80 - 16/18 is -151/180.
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,
16/18 = 16 × 40/18 × 40 = 640/720 - Subtract the two like fractions:
36/720 - 640/720 = 36 - 640/720 = -604/720 - After reducing the fraction, the answer is -151/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/80-16/18 4/80-32/18 4/80-16/36 12/80-16/18 4/80-48/18 4/80-16/54 20/80-16/18 4/80-80/18 4/80-16/90 28/80-16/18