Subtract 54/15 from 1/80
1st number: 1/80, 2nd number: 3 9/15
1/80 - 54/15 is -287/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
1/80 = 1 × 3/80 × 3 = 3/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
54/15 = 54 × 16/15 × 16 = 864/240 - Subtract the two like fractions:
3/240 - 864/240 = 3 - 864/240 = -861/240 - After reducing the fraction, the answer is -287/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/80-54/15 1/80-54/30 3/80-54/15 1/80-54/45 5/80-54/15 1/80-54/75 7/80-54/15