Subtract 54/80 from 5/7
5/7 - 54/80 is 11/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
5/7 = 5 × 80/7 × 80 = 400/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
54/80 = 54 × 7/80 × 7 = 378/560 - Subtract the two like fractions:
400/560 - 378/560 = 400 - 378/560 = 22/560 - After reducing the fraction, the answer is 11/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7-54/80 5/14-54/80 15/7-54/80 5/21-54/80 25/7-54/80 5/35-54/80 35/7-54/80 5/49-54/80