Subtract 54/5 from 7/80
1st number: 7/80, 2nd number: 10 4/5
7/80 - 54/5 is -857/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
54/5 = 54 × 16/5 × 16 = 864/80 - Subtract the two like fractions:
7/80 - 864/80 = 7 - 864/80 = -857/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/80-54/5 7/80-54/10 21/80-54/5 7/80-54/15 35/80-54/5 7/80-54/25 49/80-54/5 7/80-54/35